chore(deps): update dependency rules_proto_grpc to v4.6.0 (#270)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

WORKSPACE

@@ -116,10 +116,10 @@ apple_support_dependencies()
 # Loads rules required to compile proto files
 http_archive(
     name = "rules_proto_grpc",
-    sha256 = "f87d885ebfd6a1bdf02b4c4ba5bf6fb333f90d54561e4d520a8413c8d1fb7beb",
-    strip_prefix = "rules_proto_grpc-4.5.0",
+    sha256 = "c0d718f4d892c524025504e67a5bfe83360b3a982e654bc71fed7514eb8ac8ad",
+    strip_prefix = "rules_proto_grpc-4.6.0",
     urls = [
-        "https://github.com/rules-proto-grpc/rules_proto_grpc/archive/4.5.0.tar.gz",
+        "https://github.com/rules-proto-grpc/rules_proto_grpc/archive/4.6.0.tar.gz",
     ],
 )