github: Fix lock threads syntax and permissions

The parameters used for the reusable action were incorrect since
the 5.0.1 update. The permissions were also incorrect as the
workflow needs to write to issues and PRs.

.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