chore: [java] stopping auto release (#1596) (#486)

Source-Link: googleapis/synthtool@316ebf5
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:086f6916c24f11a1a196ea47f9da39abb4ca8730fcd6e69158fec4834287bcde

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,4 +13,4 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-java:latest
-  digest: sha256:f14e3fefe8e361e85752bd9890c8e56f2fe25f1e89cbb9597e4e3c7a429203a3
+  digest: sha256:086f6916c24f11a1a196ea47f9da39abb4ca8730fcd6e69158fec4834287bcde