Bump dessant/lock-threads from 4.0.1 to 5.0.1 (#3994)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Hinrich Mahler <22366557+Bibo-Joshi@users.noreply.github.com>

.github/workflows/lock.yml

@@ -8,10 +8,12 @@ jobs:
   lock:
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-threads@v4.0.1
+      - uses: dessant/lock-threads@v5.0.1
         with:
           github-token: ${{ github.token }}
           issue-inactive-days: '7'
           issue-lock-reason: ''
           pr-inactive-days: '7'
           pr-lock-reason: ''
+          # Don't lock Discussions
+          process-only: 'issues, prs'