chore(Maven): Fix CD into backend

templates/java/gradle/gradle-license.gitlab-ci.yml

@@ -7,7 +7,6 @@
         cd $BACKEND_DIR
       fi
   script:
-    - "cd $BACKEND_DIR"
     - "./gradlew --build-cache cyclonedxBom $GRADLE_CLI_OPTS $GRADLE_EXTRA_OPTS"
   needs: []
   artifacts:

templates/license/license.gitlab-ci.yml

@@ -8,7 +8,10 @@
     INVALID_LICENSE_ADOC_FILE: invalid-licenses.adoc
     NUMBER_OF_ALLOWED_FAILURES: 0
   script:
-    - "cd $BACKEND_DIR"
+    - >
+      if [ "$BACKEND_DIR" != "" ]; then
+        cd $BACKEND_DIR
+      fi
     - export NUMBER_OF_INVALID_LICENSES=0
     - export INVALID_BOM_FILE=invalid-bom.json
     - licenseBom2Adoc --bom $BOM_FILE --adoc $LICENSE_ADOC_FILE