Limit gradle workers in CI artifact upload

Author: tschuchortdev

.github/workflows/ci.yml

@@ -109,13 +109,15 @@ jobs:
           echo "IS_SNAPSHOT_VERSION=$IS_SNAPSHOT_VERSION" >> $GITHUB_ENV
       - name: Publish to Sonatype Nexus
         run: |
-          ./gradlew publish --info
+          # --max-workers 1 limits Gradle to a single thread even if parallel builds are enabled in the hopes
+          # of making the the upload to Sonatype Nexus less flaky
+          ./gradlew publish --info --max-workers 1
 
           if [[ "$IS_SNAPSHOT_VERSION" == "true" ]]; then
             echo "Version is a snapshot. No closing of the repository is necessary."
           elif [[ "$IS_SNAPSHOT_VERSION" == "false" ]]; then
             echo "Version is not a snapshot. Trying to close and release repository."
-            ./gradlew closeAndReleaseRepository --info
+            ./gradlew closeAndReleaseRepository --info --max-workers 1
           else
             echo "IS_SNAPSHOT_VERSION has unknown value: $IS_SNAPSHOT_VERSION"
             exit 1