fix: Use Guava v32.1.2 to resolve gradle metadata issue (#6140)

Author: lqiu96

libraries-bom/pom.xml

@@ -59,6 +59,13 @@
 
   <dependencyManagement>
     <dependencies>
+      <dependency>
+        <groupId>com.google.guava</groupId>
+        <artifactId>guava-bom</artifactId>
+        <version>32.1.2-jre</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
       <!-- first-party-dependencies is part of google-cloud-shared-dependencies
            BOM in https://github.com/googleapis/java-shared-dependencies/blob/main/first-party-dependencies/pom.xml.
            This includes Guava, Protobuf, gRPC, Google Auth Libraries, etc. -->