[ci] Improved check header job.

Will be yellow if failed.

scripts/ci/jobs/check-header.yml

@@ -16,5 +16,5 @@ check header:
       cmake ../../ogs -G Ninja
       $CMAKE_ARGS
       -DCMAKE_BUILD_TYPE=$BUILD_TYPE
-      -DOGS_BUILD_PROCESSES=$BUILD_PROCESSES || true
-    - cat CMakeFiles/CMakeError.log
+      -DOGS_BUILD_PROCESSES=$BUILD_PROCESSES || cat CMakeFiles/CMakeError.log
+    - if [[ -f "CMakeFiles/CMakeError.log" ]]; then exit 1; fi