Fix S3 promoter to use the right staging area and allow beta releases.

[mitchell-as]

Tested this on an actual beta release and it worked:

% state run promote-staging-to-production
Operating on project ActiveState/cli, located at /path/to/cli.

█ Running Script: promote-staging-to-production

█ Script Output

Promoting staging files to production...
WARNING: This will move all files from staging/ to production. Make sure Windows binaries have been signed!
Are you sure you want to continue? (y/N): y
Promoting staging files to production in bucket: state-tool
Using base prefix: update/state/
Found 28 staging files to promote:
  - staging/update/state/beta/0.48.1/darwin-amd64/info.json
  - staging/update/state/beta/0.48.1/darwin-amd64/state-darwin-amd64-0.48.1-SHAb1ea6fa.tar.gz
  - staging/update/state/beta/0.48.1/darwin-arm64/info.json
  - staging/update/state/beta/0.48.1/darwin-arm64/state-darwin-arm64-0.48.1-SHAb1ea6fa.tar.gz
  - staging/update/state/beta/0.48.1/linux-amd64/info.json
  - staging/update/state/beta/0.48.1/linux-amd64/state-linux-amd64-0.48.1-SHAb1ea6fa.tar.gz
  - staging/update/state/beta/0.48.1/linux-arm64/info.json
  - staging/update/state/beta/0.48.1/linux-arm64/state-linux-arm64-0.48.1-SHAb1ea6fa.tar.gz
  - staging/update/state/beta/0.48.1/windows-amd64/info.json
  - staging/update/state/beta/0.48.1/windows-amd64/state-windows-amd64-0.48.1-SHAb1ea6fa.zip
  - staging/update/state/beta/0.48.1/windows-amd64/state-windows-amd64-0.48.1-SHAb1ea6fa.zip.original
  - staging/update/state/beta/darwin-amd64/info.json
  - staging/update/state/beta/darwin-amd64/state-installer.tar.gz
  - staging/update/state/beta/darwin-arm64/info.json
  - staging/update/state/beta/darwin-arm64/state-installer.tar.gz
  - staging/update/state/beta/install.ps1
  - staging/update/state/beta/install.sh
  - staging/update/state/beta/legacy-install.ps1
  - staging/update/state/beta/legacy-install.sh
  - staging/update/state/beta/linux-amd64/info.json
  - staging/update/state/beta/linux-amd64/state-installer.tar.gz
  - staging/update/state/beta/linux-arm64/info.json
  - staging/update/state/beta/linux-arm64/state-installer.tar.gz
  - staging/update/state/beta/stop.ps1
  - staging/update/state/beta/stop.sh
  - staging/update/state/beta/windows-amd64/info.json
  - staging/update/state/beta/windows-amd64/state-installer.zip
  - staging/update/state/versions.json
Promoting staging/update/state/beta/0.48.1/darwin-amd64/info.json -> update/state/beta/0.48.1/darwin-amd64/info.json
Promoting staging/update/state/beta/0.48.1/darwin-amd64/state-darwin-amd64-0.48.1-SHAb1ea6fa.tar.gz -> update/state/beta/0.48.1/darwin-amd64/state-darwin-amd64-0.48.1-SHAb1ea6fa.tar.gz
Promoting staging/update/state/beta/0.48.1/darwin-arm64/info.json -> update/state/beta/0.48.1/darwin-arm64/info.json
Promoting staging/update/state/beta/0.48.1/darwin-arm64/state-darwin-arm64-0.48.1-SHAb1ea6fa.tar.gz -> update/state/beta/0.48.1/darwin-arm64/state-darwin-arm64-0.48.1-SHAb1ea6fa.tar.gz
Promoting staging/update/state/beta/0.48.1/linux-amd64/info.json -> update/state/beta/0.48.1/linux-amd64/info.json
Promoting staging/update/state/beta/0.48.1/linux-amd64/state-linux-amd64-0.48.1-SHAb1ea6fa.tar.gz -> update/state/beta/0.48.1/linux-amd64/state-linux-amd64-0.48.1-SHAb1ea6fa.tar.gz
Promoting staging/update/state/beta/0.48.1/linux-arm64/info.json -> update/state/beta/0.48.1/linux-arm64/info.json
Promoting staging/update/state/beta/0.48.1/linux-arm64/state-linux-arm64-0.48.1-SHAb1ea6fa.tar.gz -> update/state/beta/0.48.1/linux-arm64/state-linux-arm64-0.48.1-SHAb1ea6fa.tar.gz
Promoting staging/update/state/beta/0.48.1/windows-amd64/info.json -> update/state/beta/0.48.1/windows-amd64/info.json
Promoting staging/update/state/beta/0.48.1/windows-amd64/state-windows-amd64-0.48.1-SHAb1ea6fa.zip -> update/state/beta/0.48.1/windows-amd64/state-windows-amd64-0.48.1-SHAb1ea6fa.zip
Promoting staging/update/state/beta/0.48.1/windows-amd64/state-windows-amd64-0.48.1-SHAb1ea6fa.zip.original -> update/state/beta/0.48.1/windows-amd64/state-windows-amd64-0.48.1-SHAb1ea6fa.zip.original
Promoting staging/update/state/beta/darwin-amd64/info.json -> update/state/beta/darwin-amd64/info.json
Promoting staging/update/state/beta/darwin-amd64/state-installer.tar.gz -> update/state/beta/darwin-amd64/state-installer.tar.gz
Promoting staging/update/state/beta/darwin-arm64/info.json -> update/state/beta/darwin-arm64/info.json
Promoting staging/update/state/beta/darwin-arm64/state-installer.tar.gz -> update/state/beta/darwin-arm64/state-installer.tar.gz
Promoting staging/update/state/beta/install.ps1 -> update/state/beta/install.ps1
Promoting staging/update/state/beta/install.sh -> update/state/beta/install.sh
Promoting staging/update/state/beta/legacy-install.ps1 -> update/state/beta/legacy-install.ps1
Promoting staging/update/state/beta/legacy-install.sh -> update/state/beta/legacy-install.sh
Promoting staging/update/state/beta/linux-amd64/info.json -> update/state/beta/linux-amd64/info.json
Promoting staging/update/state/beta/linux-amd64/state-installer.tar.gz -> update/state/beta/linux-amd64/state-installer.tar.gz
Promoting staging/update/state/beta/linux-arm64/info.json -> update/state/beta/linux-arm64/info.json
Promoting staging/update/state/beta/linux-arm64/state-installer.tar.gz -> update/state/beta/linux-arm64/state-installer.tar.gz
Promoting staging/update/state/beta/stop.ps1 -> update/state/beta/stop.ps1
Promoting staging/update/state/beta/stop.sh -> update/state/beta/stop.sh
Promoting staging/update/state/beta/windows-amd64/info.json -> update/state/beta/windows-amd64/info.json
Promoting staging/update/state/beta/windows-amd64/state-installer.zip -> update/state/beta/windows-amd64/state-installer.zip
Promoting staging/update/state/versions.json -> update/state/versions.json
Successfully promoted 28 files from staging to production.

[mitchell-as]

I know you're out right now. This is for when you get back. I was able to release a beta version without this PR being merged.