deps: update google-http-client to v1.38.0 (#1620)

Author: renovate-bot

pom.xml

@@ -449,7 +449,7 @@
   </build>
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <project.http.version>1.37.0</project.http.version>
+    <project.http.version>1.38.0</project.http.version>
     <project.oauth.version>1.31.1</project.oauth.version>
     <project.jsr305.version>3.0.2</project.jsr305.version>
     <project.gson.version>2.8.6</project.gson.version>