ci: Configure more steps more explicitly (#61401)

Also adds some Zizmor validations.

Release Notes:

- N/A

.github/workflows/comment_on_potential_duplicate_issues.yml

@@ -41,6 +41,8 @@ jobs:
           app-id: ${{ secrets.ZED_COMMUNITY_BOT_APP_ID }}
           private-key: ${{ secrets.ZED_COMMUNITY_BOT_PRIVATE_KEY }}
           owner: zed-industries
+          repositories: zed
+          permission-issues: write
 
       - name: Set up Python
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0