feat(deps): add protobuf-java-util as a direct dep of secretmanager (#3255)

Author: stephaniewang526

secretmanager/pom.xml

@@ -44,6 +44,12 @@
       <version>1.0.1</version>
     </dependency>
 
+    <dependency>
+      <groupId>com.google.protobuf</groupId>
+      <artifactId>protobuf-java-util</artifactId>
+      <version>3.12.2</version>
+    </dependency>
+
     <!-- test dependencies -->
     <dependency>
       <groupId>junit</groupId>