deps: update dependency com.google.auth:google-auth-library-oauth2-http to v1.8.0 (#377)

Author: renovate-bot

samples/cloud-client/snippets/pom.xml

@@ -31,7 +31,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>1.4.0</version>
+      <version>1.8.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.http-client</groupId>