chore(github): run issue claims as dbx bot

.github/workflows/issue-claim.yml

@@ -16,14 +16,23 @@ jobs:
   claim:
     runs-on: ubuntu-latest
     if: ${{ !github.event.issue.pull_request }}
-    env:
-      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
       - uses: actions/checkout@v5
 
+      - name: Create DBX bot token
+        id: app-token
+        uses: actions/create-github-app-token@v3
+        with:
+          app-id: ${{ vars.DBX_BOT_APP_ID }}
+          private-key: ${{ secrets.DBX_BOT_PRIVATE_KEY }}
+          owner: ${{ github.repository_owner }}
+          repositories: dbx
+          permission-issues: write
+
       - name: Handle /claim command
         run: node .github/scripts/issue-claim.mjs
         env:
+          GH_TOKEN: ${{ steps.app-token.outputs.token }}
           ISSUE_NUMBER: ${{ github.event.issue.number }}
           COMMENT_BODY: ${{ github.event.comment.body }}
           COMMENT_USER: ${{ github.event.comment.user.login }}