Update dessant/support-requests action to v5

Author: renovate[bot]

.github/workflows/support.yml

@@ -16,7 +16,7 @@ jobs:
   action:
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/support-requests@v4
+      - uses: dessant/support-requests@v5
         with:
           github-token: ${{ github.token }}
           support-label: 'support'