chore: regenerate calendar client (googleapis#25772)

Generated in GitHub action: https://togithub.com/googleapis/googleapis/google-api-java-client-services/actions/workflows/codegen.yaml

Author: yoshi-code-bot

clients/google-api-services-calendar/v3/2.0.0/pom.xml

@@ -91,7 +91,7 @@
           <links>
             <link>http://docs.oracle.com/javase/7/docs/api</link>
             <link>https://googleapis.dev/java/google-http-client/1.46.1/</link>
-            <link>https://googleapis.dev/java/google-oauth-client/1.37.0/</link>
+            <link>https://googleapis.dev/java/google-oauth-client/1.38.0/</link>
             <link>https://googleapis.dev/java/google-api-client/2.7.2/</link>
           </links>
         </configuration>