ci: add more stale bot exempt issue labels

[MisterTimn]

✍️ Description

Stale bot has been running for a while now with a debug flag. This PR adds more labels that we should likely exempt from staleness checks.

✅ PR check list

Before this pull request can be merged, a core maintainer will check whether

• [x] this PR is labeled with the correct semver label
  • semver.patch: Backwards compatible bug fixes.
  • semver.minor: Backwards compatible feature additions.
  • semver.major: Breaking changes. This includes changing interfaces or configuration behaviour.
• [x] the correct branch is targeted. Patch updates can target main, other changes should target the latest versions/* branch.
• [x] the RELEASE_NOTES.md document in case of relevant feature or config changes.
• [x] any relevant documentation was updated to reflect the changes in this PR.