chore: fix parallelism in library compilation

Author: diegomarquezp

.github/workflows/verify.yaml

@@ -19,6 +19,16 @@ jobs:
           path: google-api-java-client-services
       # we install the moreutils `parallel` command
       - run: sudo apt-get install moreutils
-      - working-directory: google-api-java-client-services
-        run: bash .github/workflows/verify_compilation.sh
+      - working-directory: google-api-java-client-services/clients
+        run: |
+          find . -name pom.xml -not -path '*/target/*' \
+          | cut -d'/' -f2-4 \
+          | sed 's/\(.*\)/<module>\1<\/module>/' \
+          | (echo "<project><modelVersion>4.0.0</modelVersion><groupId>temp</groupId><artifactId>temp</artifactId><version>1.0</version><packaging>pom</packaging><modules>"; cat -; echo "</modules></project>") > pom.xml
+
+          mvn clean compile -Dmaven.testSkip=true -fae --fail-at-end \
+          |& grep -E "^\[ERROR\] Failed to execute goal" \
+          | awk -F'module ' '{print $2}' \
+          | awk -F'\[ERROR\]' '{print $1}' \
+          | sort -u