chore: update java template license header year (#1917)

* chore: update java template's license header year

* update year in test files

* remove unwanted file

* compute license year dynamically
Source-Link: googleapis/synthtool@86b9411
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:673eb39211c6d7dc2f037806efe6138637cf9f43c129772981dc78d6f1b83bb9

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -1,4 +1,4 @@
-# Copyright 2023 Google LLC
+# Copyright 2024 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,4 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-java:latest
-  digest: sha256:5df8b62e8da534f7604daef347698f6701e34b3f61713712a3384ac88fc32088
+  digest: sha256:673eb39211c6d7dc2f037806efe6138637cf9f43c129772981dc78d6f1b83bb9
+# created: 2024-01-19T19:30:54.980246646Z

.github/dependabot.yml

@@ -5,10 +5,15 @@ updates:
     schedule:
       interval: "daily"
     # Disable version updates for Maven dependencies
-    open-pull-requests-limit: 0
+    # we use renovate-bot as well as shared-dependencies BOM to update maven dependencies.
+    ignore:
+      - dependency-name: "*"
   - package-ecosystem: "pip"
     directory: "/"
     schedule:
       interval: "daily"
     # Disable version updates for pip dependencies
-    open-pull-requests-limit: 0
+    # If a security vulnerability comes in, we will be notified about 
+    # it via template in the synthtool repository.
+    ignore:
+      - dependency-name: "*"

.github/release-trigger.yml

@@ -1 +1,2 @@
 enabled: true
+multiScmName: java-pubsub-group-kafka-connector