chore(release): merge develop to main (#372)

### Description

Changelog:

- feat: upgrade tests - provide automated solution for performing
upgrade tests
- feat: spl2 content tests - introduce spl2 testing on GH runner
- feat: exit-first label - enable exiting pytest after first
failure/error occurrence
- feat: remove requirement-tests - test type no longer supported and
present across TA repositories
- fix: deps installation - deps are no longer installed during test
preparation phase on pods. Venv is being pre-configured on GH runner and
passed to pods via AWS S3.
- fix: scheduled test runs are executed only on latest version of Splunk
- fix: support of ssh path to github in setup job

Deps updates:

trufflesecurity/trufflehog to v3.88.5
k8s-manifests bump to v3.3.2 (upgrade tests, deps installation shift to
GH runner)
appinspect cli action to v2.9 (Splunk appinspect 3.9.1)

### Checklist

- [ ] `README.md` has been updated or is not required
- [ ] push trigger tests
- [ ] manual release test
- [ ] automated releases test
- [ ] pull request trigger tests
- [ ] schedule trigger tests
- [ ] workflow errors/warnings reviewed and addressed

### Testing done 

https://github.com/splunk/splunk-add-on-for-salesforce/actions/runs/13244857657

https://github.com/splunk/splunk-add-on-for-crowdstrike-fdr/actions/runs/13244966818

https://github.com/splunk/splunk-add-on-for-palo-alto-networks/actions/runs/13244914436

https://github.com/splunk/splunk-add-on-for-jboss/actions/runs/13248334345

https://github.com/splunk/splunk-add-on-for-unix-and-linux/actions/runs/13244955484

https://github.com/splunk/splunk-add-on-for-amazon-web-services/actions/runs/13244942793

Author: mkolasinski-splunk