Fix a sporadic CI failure (#5301)

.github/workflows/ci.yml

@@ -26,7 +26,8 @@ jobs:
           GE_CACHE_PASSWORD: ${{ secrets.GE_CACHE_PASSWORD }}
         uses: gradle/gradle-build-action@v2
         with:
-          arguments: build
+          # javadoc task fails sporadically fetching https://docs.oracle.com/javase/8/docs/api/
+          arguments: build -x javadoc
 
   build-gradle-plugins:
     runs-on: ubuntu-latest

.github/workflows/nightly-no-cache.yml

@@ -23,7 +23,8 @@ jobs:
           GRADLE_ENTERPRISE_ACCESS_KEY: ${{ secrets.GRADLE_ENTERPRISE_ACCESS_KEY }}
         uses: gradle/gradle-build-action@v2
         with:
-          arguments: build --no-build-cache
+          # javadoc task fails sporadically fetching https://docs.oracle.com/javase/8/docs/api/
+          arguments: build --no-build-cache -x javadoc
 
   build-gradle-plugins:
     runs-on: ubuntu-latest

.github/workflows/nightly.yml

@@ -25,7 +25,8 @@ jobs:
           GE_CACHE_PASSWORD: ${{ secrets.GE_CACHE_PASSWORD }}
         uses: gradle/gradle-build-action@v2
         with:
-          arguments: build
+          # javadoc task fails sporadically fetching https://docs.oracle.com/javase/8/docs/api/
+          arguments: build -x javadoc
 
   build-gradle-plugins:
     runs-on: ubuntu-latest

.github/workflows/pr.yml

@@ -24,7 +24,8 @@ jobs:
       - name: Build
         uses: gradle/gradle-build-action@v2
         with:
-          arguments: build
+          # javadoc task fails sporadically fetching https://docs.oracle.com/javase/8/docs/api/
+          arguments: build -x javadoc
           cache-read-only: true
 
       - name: Upload deadlock detector artifacts if any