Bump @grpc/grpc-js from 1.2.7 to 1.2.8
Bump @grpc/grpc-js from 1.2.7 to 1.2.8

Bumps [@grpc/grpc-js](https://github.com/grpc/grpc-node) from 1.2.7 to 1.2.8.
- [Release notes](https://github.com/grpc/grpc-node/releases)
- [Commits](https://github.com/grpc/grpc-node/compare/@grpc/grpc-js@1.2.7...@grpc/grpc-js@1.2.8)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
malijs/mali