run workflow when unlabel WIP PR

.github/workflows/checks.yml

@@ -2,6 +2,7 @@ name: Checks
 on:
   workflow_dispatch:
   pull_request:
+    types: [ opened, synchronize, unlabeled ]
     paths-ignore:
       - '.github/ISSUE_TEMPLATE/**'
       - '.husky/**'
@@ -30,7 +31,7 @@ jobs:
   code_quality:
     name: Code quality
     runs-on: ubuntu-latest
-    if: "!contains(github.event.pull_request.labels.*.name, 'WIP')"
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'WIP') && !(github.event.action == 'unlabeled' && github.event.label.name != 'WIP') }}
     steps:
       - name: Checkout repo
         uses: actions/checkout@v3