chore: Add IAM v3 to generation configs (#3774)

See b/406872289 for more infomation

---------

Co-authored-by: cloud-java-bot <[email protected]>

Author: lqiu96

java-iam/pom.xml

@@ -142,6 +142,16 @@
         <artifactId>grpc-google-iam-v3</artifactId>
         <version>1.56.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-iam-v3:current} -->
       </dependency>
+      <dependency>
+        <groupId>com.google.api.grpc.api.grpc</groupId>
+        <artifactId>proto-google-iam-v3</artifactId>
+        <version>1.50.3-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v3:current} -->
+      </dependency>
+      <dependency>
+        <groupId>com.google.api.grpc.api.grpc</groupId>
+        <artifactId>grpc-google-iam-v3</artifactId>
+        <version>1.50.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-iam-v3:current} -->
+      </dependency>
       <dependency>
         <groupId>javax.annotation</groupId>
         <artifactId>javax.annotation-api</artifactId>