Tweak com_google_protobuf version

Signed-off-by: Bili Dong <qobilidop@gmail.com>

Author: qobilidop

p4_constraints_deps.bzl

@@ -27,8 +27,9 @@ def p4_constraints_deps():
     if not native.existing_rule("com_google_protobuf"):
         http_archive(
             name = "com_google_protobuf",
-            url = "https://github.com/protocolbuffers/protobuf/releases/download/v29.1/protobuf-29.1.tar.gz",
-            strip_prefix = "protobuf-29.1",
+            url = "https://github.com/protocolbuffers/protobuf/archive/refs/tags/v25.2.zip",
+            strip_prefix = "protobuf-25.2",
+            sha256 = "ddd0f5271f31b549efc74eb39061e142132653d5d043071fcec265bd571e73c4",
         )
     if not native.existing_rule("com_googlesource_code_re2"):
         http_archive(