gem: update google-protobuf to v4 #100

	name: Build and test

	on:
	push:


	jobs:
	lint:
	name: Lint
	runs-on: ubuntu-latest
	permissions:
	packages: write
	contents: read

	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	- name: Set up Ruby 2.5
	uses: ruby/setup-ruby@09a7688d3b55cf0e976497ff046b70949eeaccfd # v1.288.0
	- name: Install bundler explicitly for Ruby 2.5
	run: \|
	gem install bundler -v 2.3.27
	bundle _2.3.27_ install
	- name: "Linting"
	run: "bundle exec rake lint:check"

	test:
	name: Unit testing with Ruby version ${{ matrix.ruby-version }}
	runs-on: ubuntu-latest
	permissions:
	packages: write
	contents: read
	strategy:
	matrix:
	ruby-version:
	- '3.1'
	- '3.0'
	- '2.7'
	- '2.6'
	- '2.5'
	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	- name: Set up Ruby
	uses: ruby/setup-ruby@09a7688d3b55cf0e976497ff046b70949eeaccfd # v1.288.0
	with:
	bundler-cache: true
	ruby-version: ${{ matrix.ruby-version }}
	- name: "Unit test"
	run: "bundle exec rake test:unit"

	build:
	name: Building gem with Ruby version ${{ matrix.ruby-version }}
	runs-on: ubuntu-latest
	permissions:
	packages: write
	contents: read
	strategy:
	matrix:
	ruby-version:
	- '3.1'
	- '3.0'
	- '2.7'
	- '2.6'
	- '2.5'

	steps:
	- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
	- name: Set up Ruby
	uses: ruby/setup-ruby@09a7688d3b55cf0e976497ff046b70949eeaccfd # v1.288.0
	with:
	bundler-cache: true
	ruby-version: ${{ matrix.ruby-version }}
	- name: "Building gem"
	run: "bundle exec rake build"

Provide feedback