github: Fix lock threads syntax and permissions (#24709)

Co-authored-by: James Rasell <[email protected]>

.github/workflows/lock.yml

@@ -11,16 +11,18 @@ jobs:
       - uses: dessant/lock-threads@1bf7ec25051fe7c00bdd17e6a7cf3d7bfb7dc771 # v5.0.1
         with:
           github-token: ${{ github.token }}
-          issue-lock-comment: >
+          process-only: 'issues, prs'
+          issue-comment: >
             I'm going to lock this issue because it has been closed for _120 days_ ⏳. This helps our maintainers find and focus on the active issues.
 
             If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.
-          issue-lock-inactive-days: '120'
-          pr-lock-comment: >
+          issue-inactive-days: '120'
+          pr-comment: >
             I'm going to lock this pull request because it has been closed for _120 days_ ⏳. This helps our maintainers find and focus on the active contributions.
 
             If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.
-          pr-lock-inactive-days: '120'
-permissions:
-  contents: read
+          pr-inactive-days: '120'
 
+permissions:
+  issues: write
+  pull-requests: write