chore(ci): add losisin/helm-values-schema-json-action

.gitea/workflows/test-pr.yml

@@ -51,12 +51,10 @@ jobs:
   helm-schema-values:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
-      with:
-        ref: ${{ github.event.pull_request.head.ref }}
-    - name: Generate values schema json
-      uses: losisin/helm-values-schema-json-action@v1.8.0
-      with:
-        input: values.yaml
-    - name: Verify values.schema.json
-      run: git diff --exit-code --name-only values.schema.json
+      - uses: actions/checkout@v4
+      - name: Generate values schema json
+        uses: losisin/helm-values-schema-json-action@v1.8.0
+        with:
+          input: values.yaml
+      - name: Verify values.schema.json
+        run: git diff --exit-code --name-only values.schema.json