deps: update oauth client (#1499)

@stephaniewang526

Author: elharo

pom.xml

@@ -478,7 +478,7 @@
     -->
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.http.version>1.34.2</project.http.version>
-    <project.oauth.version>1.30.5</project.oauth.version>
+    <project.oauth.version>1.30.6</project.oauth.version>
     <project.jsr305.version>3.0.2</project.jsr305.version>
     <project.gson.version>2.8.6</project.gson.version>
     <project.protobuf-java.version>3.11.4</project.protobuf-java.version>