deps: update dependency com.google.oauth-client:google-oauth-client t…

…o v1.30.6 (#60)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| com.google.oauth-client:google-oauth-client | patch | `1.30.5` -> `1.30.6` |

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pom.xml

@@ -251,7 +251,7 @@
       <dependency>
         <groupId>com.google.oauth-client</groupId>
         <artifactId>google-oauth-client</artifactId>
-        <version>1.30.5</version>
+        <version>1.30.6</version>
       </dependency>
 
       <dependency>