chore: remove executable bit from stale.yml and greetings.yml

[iamnewton]

Summary

Two workflow files in .github/workflows/ have their executable bit set, which is inconsistent with every other template and with how these auto-generated files are produced by holocron setup:

-rwxr-xr-x  stale.yml*
-rwxr-xr-x  greetings.yml*

All other workflow files in this repo (and in every other template repo) are plain -rw-r--r--.

Fix

chmod 644 .github/workflows/stale.yml .github/workflows/greetings.yml

Acceptance criteria

• Both files are non-executable (-rw-r--r--)
• Committed and merged to main

[iamnewton]

🎉 This issue has been resolved in version 1.4.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀