dev: try to restore the check step

Author: ldez

.github/workflows/pr-checks.yml

@@ -27,22 +27,21 @@ jobs:
           git diff --exit-code go.mod
           git diff --exit-code go.sum
 
-  # This check is disabled because of GitHub API instability: 504 Gateway Timeout.
   # Checks: GitHub action assets
-#  check-generated:
-#    runs-on: ubuntu-latest
-#    steps:
-#      - uses: actions/checkout@v4
-#        with:
-#          fetch-depth: 0
-#      - uses: actions/setup-go@v5
-#        with:
-#          go-version: ${{ env.GO_VERSION }}
-#      - name: Check generated files are up-to-date
-#        run: make fast_check_generated
-#        env:
-#          # needed for github-action-config.json generation
-#          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  check-generated:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-go@v5
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - name: Check generated files are up-to-date
+        run: make fast_check_generated
+        env:
+          # needed for github-action-config.json generation
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
   check-local-install-script:
     name: Installation script (local)