update (#755)
update (#755)

- updated bazel/repositories.bzl
- .bazelrc already in sync
- no code changes

Signed-off-by: qqustc@gmail.com <599bc1b4e68ce4222dfc048aebd583fa103b6b38@google.com>
envoyproxy/nighthawk,envoyproxy/nighthawk,envoyproxy/nighthawk,envoyproxy/nighthawk