chore(deps): update rules_proto digest to 81772f6

Author: renovate-bot

WORKSPACE

@@ -26,11 +26,11 @@ protobuf_deps()
 
 http_archive(
     name = "rules_proto",
-    sha256 = "602e7161d9195e50246177e7c55b2f39950a9cf7366f74ed5f22fd45750cd208",
-    strip_prefix = "rules_proto-97d8af4dc474595af3900dd85cb3a29ad28cc313",
+    sha256 = "d4ec6487f253405e45abcb0f74e7b7f27a9bc927d1cca9d761b9fc3d94f4429f",
+    strip_prefix = "rules_proto-81772f662fce17758739bc32b7120f0ce3808a57",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/rules_proto/archive/97d8af4dc474595af3900dd85cb3a29ad28cc313.tar.gz",
-        "https://github.com/bazelbuild/rules_proto/archive/97d8af4dc474595af3900dd85cb3a29ad28cc313.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_proto/archive/81772f662fce17758739bc32b7120f0ce3808a57.tar.gz",
+        "https://github.com/bazelbuild/rules_proto/archive/81772f662fce17758739bc32b7120f0ce3808a57.tar.gz",
     ],
 )