feat: Replace semantic PR action with fork-safe PR title validation

[anket-cd]

Description

Type of Change

• 🐛 Bug fix
• ✨ New workflow
• 📝 Documentation update
• 🔧 Workflow enhancement
• 🎨 Code style/formatting
• ♻️ Refactoring
• ⚡ Performance improvement
• 🔒 Security improvement

Workflow Category

• Terraform (tf-*)
• CloudFormation (cf-*)
• Docker (docker-*)
• Helm (helm-*)
• PR Automation (pr-*)
• Security (security-*)
• Release (release-*)
• Notification (notify-*)
• AWS-specific (aws-*)
• GCP-specific (gcp-*)
• YAML Lint (yl-*)
• Other

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation accordingly
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published

Testing

• Removed amannn/action-semantic-pull-request for PR title validation.
• Added a lightweight regex-based PR title validation script.
• Enforces Conventional Commit style titles with optional scope.
• Avoids permission issues for forked pull requests (Resource not accessible by integration).
• Works safely for both internal and fork PRs since it only reads the PR event payload.

Screenshots/Documentation

Related Issues

Closes #

Additional Notes

[pendharevaibhav-cd]

LGTM!