Bump google.golang.org/grpc from 1.50.1 to 1.56.3 in /cmd/grpctl/docs #125

	# Adapted from https://github.com/cashapp/hermit/blob/196cebb641d93a47e1f60b07f1b386e882c9b40d/.github/workflows/ci.yml#L1
	on:
	push:
	paths-ignore:
	- 'docs/**'
	branches:
	pull_request:
	paths-ignore:
	- 'docs/**'
	name: CI
	jobs:
	test:
	name: Test
	runs-on: ubuntu-20.04
	steps:
	- name: Checkout code
	uses: actions/checkout@v2
	- name: Init Hermit
	run: ./bin/hermit env -r >> $GITHUB_ENV
	- name: Test
	run: go test ./...
	lint:
	name: Lint
	runs-on: ubuntu-20.04
	steps:
	- name: Checkout code
	uses: actions/checkout@v2
	- name: Init Hermit
	run: ./bin/hermit env -r >> $GITHUB_ENV
	- name: golangci-lint
	run: golangci-lint run

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