infra: enable CI tests for all pull requests

- Remove branch restriction that limited CI tests to PRs against main branch
- CI tests now run on ALL pull requests, regardless of target branch
- Ensures proper testing for feature branches against release branches
- Publishing steps remain commented out for manual publishing only

This allows the development workflow using release branches to have
proper CI validation for all pull requests.

Author: briandominick

.github/workflows/ci-cd.yml

@@ -4,7 +4,7 @@ on:
   push:
     branches: [ main, develop ]
   pull_request:
-    branches: [ main ]
+    # Run tests on ALL pull requests, regardless of target branch
   release:
     types: [ published ]