Upgrade error-prone to 3.3.4 (#848)

* Upgrade error-prone to 3.3.4

This would fix the failure with openjdk 11.0.9 in
3.3.3.

Fixed new antipatterns raised by the new version:
- Replaced unnecessary lambdas with methods.
- Switched wait/sleep calls to equivalent methods using java.time types
- Types inheriting Object.toString() should not be assigned to string
parameter in logging statements.

common/src/main/java/google/registry/util/SystemSleeper.java

@@ -18,7 +18,6 @@ import static com.google.common.base.Preconditions.checkArgument;
 
 import com.google.common.util.concurrent.Uninterruptibles;
 import java.io.Serializable;
-import java.util.concurrent.TimeUnit;
 import javax.annotation.concurrent.ThreadSafe;
 import javax.inject.Inject;
 import org.joda.time.ReadableDuration;
@@ -41,6 +40,6 @@ public final class SystemSleeper implements Sleeper, Serializable {
   @Override
   public void sleepUninterruptibly(ReadableDuration duration) {
     checkArgument(duration.getMillis() >= 0);
-    Uninterruptibles.sleepUninterruptibly(duration.getMillis(), TimeUnit.MILLISECONDS);
+    Uninterruptibles.sleepUninterruptibly(java.time.Duration.ofMillis(duration.getMillis()));
   }
 }