fix: auto-pin shas in workflows

[shrutiburman]

Fixes

test run of env change for cluster tests- https://github.com/twilio/twilio-java/actions/runs/33046542359/job/98432152050

Checklist

• I acknowledge that all my contributions will be made under the project's license
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the Contribution Guidelines and my PR follows them
• I have titled the PR appropriately
• I have updated my branch with the main branch
• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary documentation about the functionality in the appropriate .md file
• I have added inline documentation to the code I modified

If you have questions, please file a support ticket, or create a GitHub Issue in this repository.

[kridai]

this needs to be configured in github settings. currently we don't have any other environment apart from production

[shrutiburman]

yeah I reverted it with a comment because there's a bot that periodically cleans up Environments other than Production