deps: Update com.google.auth dependencies to v1.20.0 (#1581)

Author: renovate-bot

core/pom.xml

@@ -197,13 +197,13 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-credentials</artifactId>
-      <version>1.19.0</version>
+      <version>1.20.0</version>
     </dependency>
 
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>1.19.0</version>
+      <version>1.20.0</version>
     </dependency>
 
     <dependency>