Update package_config.json
Update package_config.json

Change-Id: I4e1228a4fe10dcebf2f248dc9a18ae9fe5934125
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/185820
Reviewed-by: Jens Johansen <05223a3c6bdf76af6f84755eae231abeebcf4530@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk