build(java): update autorelease title check in response to the new mu…

…lti release branch changes (#1314)

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/8cc0a777-d7bc-4b36-bf33-b2f08ac29afb/targets

- [ ] To automatically regenerate this PR, check this box.

Source-Link: googleapis/synthtool@0b064d7

.github/workflows/auto-release.yaml

@@ -16,8 +16,8 @@ jobs:
             return;
           }
 
-          // only approve PRs like "chore(master): release <release version>"
-          if ( !context.payload.pull_request.title.startsWith("chore(master): release") ) {
+          // only approve PRs like "chore: release <release version>"
+          if ( !context.payload.pull_request.title.startsWith("chore: release") ) {
             return;
           }
 

synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/google-http-java-client.git",
-        "sha": "fc00f28f76a01f04f7b81d7bcacce861497caede"
+        "sha": "bd7390844fb6f7327823ecddd189782eed954206"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "d0bdade9a962042dc0f770cf631086f3db59b5b0"
+        "sha": "0b064d767537e0675fc053e53fca473c5c701fb8"
       }
     }
   ],