fix: Add feature flag proto to BUILD file

Google APIs · copybara-github · commit 38247e83e10a · 2023-05-01T07:35:22.000-07:00
PiperOrigin-RevId: 528468347
diff --git a/google/bigtable/v2/BUILD.bazel b/google/bigtable/v2/BUILD.bazel
@@ -45,6 +45,7 @@ proto_library(
     srcs = [
         "bigtable.proto",
         "data.proto",
+        "feature_flags.proto",
         "request_stats.proto",
         "response_params.proto",
     ],
