Bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/push_gem.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: rubygems/configure-rubygems-credentials@main
         with:
           role-to-assume: rg_oidc_akr_e3gvf8d8qwrffk7gjno7
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set remote URL
         run: |
           # Attribute commits to the last committer on HEAD

.github/workflows/rubygems.yml

@@ -49,7 +49,7 @@ jobs:
             ruby: { name: truffleruby-head, value: truffleruby-head }
 
     steps:
-      - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493 # v4.1.1
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v4.1.1
       - name: Setup ruby
         uses: ruby/setup-ruby@efbf473cab83af4468e8606cc33eca9281bb213f # v1.256.0
         with:

.github/workflows/scorecards.yml

@@ -27,7 +27,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493 # v4.1.1
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v4.1.1
         with:
           persist-credentials: false
 

.github/workflows/spell.yml

@@ -15,5 +15,5 @@ jobs:
     name: Check spelling
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493 # v4.1.1
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v4.1.1
       - uses: codespell-project/actions-codespell@406322ec52dd7b488e48c1c4b82e2a8b3a1bf630 # v2.1

.github/workflows/ubuntu-lint.yml

@@ -21,7 +21,7 @@ jobs:
     env:
       RUBYOPT: -Ilib
     steps:
-      - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493 # v4.1.1
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v4.1.1
       - name: Setup ruby
         uses: ruby/setup-ruby@8575951200e472d5f2d95c625da0c7bec8217c42 # v1.161.0
         with: