[Step 2] Update non-third party change for jackson2

Follow up for #15215 and Step two for #15176

Closes #15295.

PiperOrigin-RevId: 443050332

Author: ThomasCJY

src/test/java/com/google/devtools/build/lib/remote/GrpcCacheClientTestBase.java

@@ -19,7 +19,7 @@
 import build.bazel.remote.execution.v2.Digest;
 import build.bazel.remote.execution.v2.RequestMetadata;
 import com.google.api.client.json.GenericJson;
-import com.google.api.client.json.jackson2.JacksonFactory;
+import com.google.api.client.json.gson.GsonFactory;
 import com.google.common.collect.ImmutableList;
 import com.google.common.util.concurrent.ListeningScheduledExecutorService;
 import com.google.common.util.concurrent.MoreExecutors;
@@ -135,7 +135,7 @@ protected GrpcCacheClient newClient(
     json.put("client_secret", "foo");
     json.put("refresh_token", "bar");
     Scratch scratch = new Scratch();
-    scratch.file(authTlsOptions.googleCredentials, new JacksonFactory().toString(json));
+    scratch.file(authTlsOptions.googleCredentials, new GsonFactory().toString(json));
 
     CallCredentialsProvider callCredentialsProvider;
     try (InputStream in = scratch.resolve(authTlsOptions.googleCredentials).getInputStream()) {