Update protobuf-java to 4.33.4 to match Gerrit

Change-Id: Ifd8d7d3ef3d7cb3b114bd447a561629f738ac49d

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index a3c81ee..459ce39 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -190,8 +190,8 @@
 
 maven_jar(
     name = "protobuf",
-    artifact = "com.google.protobuf:protobuf-java:4.33.2",
-    sha1 = "c85bf5de1ad10453792675f6515401f7b8eb6860",
+    artifact = "com.google.protobuf:protobuf-java:4.33.4",
+    sha1 = "16535c6547fa14b105611f663659b7f24758d692",
 )
 
 maven_jar(