build(java): update autorelease branch name check (googleapis#365)

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/7ee5fecc-11ab-4aa3-baf6-a4b4a6861c53/targets

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Source-Link: googleapis/synthtool@140ba24

java-resourcemanager/.github/workflows/auto-release.yaml

@@ -17,7 +17,7 @@ jobs:
           }
 
           // only approve PRs like "chore: release <release version>"
-          if ( !context.payload.pull_request.title.startsWith("chore: release") ) {
+          if ( !context.payload.pull_request.title.startsWith("chore(master): release") ) {
             return;
           }
 

java-resourcemanager/synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-resourcemanager.git",
-        "sha": "0950e825836c5dd270f1f749b5427b36808b0939"
+        "sha": "0c0c37cdf1011d00402038a414bab6bf01879494"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "e935c9ecb47da0f2e054f5f1845f7cf7c95fa625"
+        "sha": "140ba24a136c63e7f10a998a63e7898aed63ea7d"
       }
     }
   ],