feat: mark auto-value-annotations scope as provided (#151)

* feat: mark auto-value-annotations scope as provided

recommeneded by AutoValue creator, Eamonn McManus

experimented in java-bigquery https://github.com/googleapis/java-bigquery/pull/402/files

* remove extra char

Author: stephaniewang526

pom.xml

@@ -499,6 +499,8 @@
         <groupId>com.google.auto.value</groupId>
         <artifactId>auto-value-annotations</artifactId>
         <version>${auto-value-annotation.version}</version>
+        <!-- Marking scope as provided per sync up w AutoValue creator-->
+        <scope>provided</scope>
       </dependency>
     </dependencies>
   </dependencyManagement>