Update test.yml

.github/workflows/test.yml

@@ -9,6 +9,17 @@ on:
       - main
 
 jobs:
+  shellcheck:
+    name: Run shellcheck
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout to branch
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
+
+      - name: shellcheck
+        uses: reviewdog/action-shellcheck@v1.19
+
   test:
     name: Test setup-postgresql
     runs-on: ${{ matrix.platform }}
@@ -20,8 +31,6 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - name: shellcheck
-        uses: reviewdog/action-shellcheck@v1
       - name: Run docker-action
         uses: ./
         with: