ci: add approvers based on github enterprise environments, update release pipeline to follow new release/hotfix strategy.

[gzukel]

Description

CI Updates:

1. Updated the release pipeline to include GitHub environment-based approvers.
2. Added logic to enforce a specific branch strategy for hotfixes and releases (ex. hotfix/v{x}.{x}.{x} || release/v{x}.{x}.{x}) during build execution.

Closes: DEVOP-676

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• CI Change

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Include instructions and any relevant details so others can reproduce.

• Tested CCTX in localnet
• Tested in development environment
• Go unit tests
• Go integration tests
• Tested via GitHub Actions

Checklist:

• I have added unit tests that prove my fix feature works