add linting workflow dispatch

Author: MikeMcC399

.github/workflows/linters.yml

@@ -8,7 +8,7 @@ on:
       - main
       - v[0-9]+.x-staging
       - v[0-9]+.x
-
+  workflow_dispatch:
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true