build(deps-dev): bump @grpc/proto-loader from 0.6.1 to 0.6.2 (#255)

Bumps [@grpc/proto-loader](https://github.com/grpc/grpc-node) from 0.6.1 to 0.6.2.
- [Release notes](https://github.com/grpc/grpc-node/releases)
- [Commits](https://github.com/grpc/grpc-node/compare/@grpc/[email protected]...@grpc/[email protected])

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]