chore: Refactor github workflows

.github/workflows/js.yml → .github/workflows/checks.yml

@@ -1,4 +1,4 @@
-name: JavaScript
+name: CI Checks
 on:
   push:
     branches:
@@ -42,13 +42,29 @@ jobs:
       - run: yarn start:redis
       - run: yarn test
 
+  test_pacts:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: serlo/configure-repositories/actions/setup-node@main
+      - run: yarn start:redis
+      - run: yarn pacts
+      - name: Check for uncommitted changes
+        run: |
+          if ! git diff --exit-code; then
+            echo "There are uncommitted changes in the repository."
+            exit 1
+          fi
+
   codegen:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: serlo/configure-repositories/actions/setup-node@main
       - run: yarn codegen
-      - id: changes
-        uses: UnicornGlobal/has-changes-action@v1.0.12
-      - run: echo "Outdated types. Please run \`yarn codegen\` and commit your changes." && exit 1
-        if: steps.changes.outputs.changed == 1
+      - name: Check for uncommitted changes
+        run: |
+          if ! git diff --exit-code; then
+            echo "There are uncommitted changes in the repository."
+            exit 1
+          fi