chore(java): set yoshi-java as default CODEOWNER (#280)

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Source-Link: googleapis/synthtool@80003a3

Author: yoshi-automation

.github/CODEOWNERS

@@ -4,5 +4,7 @@
 # For syntax help see:
 # https://help.github.com/en/github/creating-cloning-and-archiving-repositories/about-code-owners#codeowners-syntax
 
+*                       @googleapis/yoshi-java
+
 # The java-samples-reviewers team is the default owner for samples changes
 samples/**/*.java       @googleapis/java-samples-reviewers

synth.metadata

@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-dialogflow.git",
-        "sha": "25f8ad0faf799898626afd7efd0b3fe40e5b6b07"
+        "sha": "a8f64abd553dc8adceac9243931ef5f7cb72f35e"
       }
     },
     {
@@ -27,7 +27,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "538a68019eb4a36a0cdfa4021f324dd01b784395"
+        "sha": "80003a3de2d8a75f5b47cb2e77e018f7f0f776cc"
       }
     }
   ],