Bump dessant/lock-threads from 4 to 5 (#852)

* Bump dessant/lock-threads from 4 to 5

Bumps [dessant/lock-threads](https://github.com/dessant/lock-threads) from 4 to 5.
- [Release notes](https://github.com/dessant/lock-threads/releases)
- [Changelog](https://github.com/dessant/lock-threads/blob/main/CHANGELOG.md)
- [Commits](dessant/lock-threads@v4...v5)

---
updated-dependencies:
- dependency-name: dessant/lock-threads
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Ken Odegard <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.github/workflows/lock.yml

@@ -18,7 +18,7 @@ jobs:
     if: '!github.event.repository.fork'
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-threads@v4
+      - uses: dessant/lock-threads@v5
         with:
           # Number of days of inactivity before a closed issue is locked
           issue-inactive-days: 365
@@ -42,5 +42,5 @@ jobs:
           # Reason for locking a pull request, value must be one of resolved, off-topic, too heated, spam or ''
           pr-lock-reason: resolved
 
-          # Limit locking to only issues or pull requests, value must be one of issues, prs or ''
-          process-only: ''
+          # Limit locking to issues, pull requests or discussions, value must be a comma separated list of issues, prs, discussions or ''
+          process-only: issues, prs