test: add --no-parallel for ci check

Author: matrei

.github/workflows/gradle.yml

@@ -47,9 +47,10 @@ jobs:
         run: >
           ./gradlew
           check
-          --max-workers=2
+          --max-workers=1
           --refresh-dependencies
           --continue
+          --no-parallel
           -PgebAtCheckWaiting
   functionalTests:
     if: ${{ !contains(github.event.head_commit.message, '[skip tests]') }}