proto_gazelle: use internal gazelle version (#295)

Author: pcj

rules/proto_gazelle.bzl

@@ -77,7 +77,7 @@ _gazelle_runner = rule(
     implementation = _gazelle_runner_impl,
     attrs = {
         "gazelle": attr.label(
-            default = "@bazel_gazelle//cmd/gazelle",
+            default = "@build_stack_rules_proto//cmd/gazelle",
             executable = True,
             cfg = "exec",
         ),