chore: [java] generation with shared deps 3.0.4 (#1641) (#968)

* chore: [java] generation with shared deps 3.0.4

* fix for tests
Source-Link: https://togithub.com/googleapis/synthtool/commit/c3ad3cc9d876a3dd897cc511cf5ef921784851ae
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:5643a4e1b729803e67ddceee450e87052527b37cac394bf900b4f8e3d1bb3e9b

Author: gcf-owl-bot[bot]

java-monitoring/.github/.OwlBot.lock.yaml

@@ -13,5 +13,4 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-java:latest
-  digest: sha256:f14e3fefe8e361e85752bd9890c8e56f2fe25f1e89cbb9597e4e3c7a429203a3
-
+  digest: sha256:5643a4e1b729803e67ddceee450e87052527b37cac394bf900b4f8e3d1bb3e9b