Update dependency com_google_protobuf to v25.4

Author: renovate[bot]

WORKSPACE

@@ -41,9 +41,9 @@ http_archive(
 
 http_archive(
     name = "com_google_protobuf",
-    sha256 = "8ff511a64fc46ee792d3fe49a5a1bcad6f7dc50dfbba5a28b0e5b979c17f9871",
-    strip_prefix = "protobuf-25.2",
-    url = "https://github.com/protocolbuffers/protobuf/releases/download/v25.2/protobuf-25.2.tar.gz",
+    sha256 = "af9236a5b5b0f641b20f5511c1e4527efa981ac91d7342c6b1033f4f03bc5d21",
+    strip_prefix = "protobuf-25.4",
+    url = "https://github.com/protocolbuffers/protobuf/releases/download/v25.4/protobuf-25.4.tar.gz",
 )
 
 http_archive(