feat: add an action to make gomod2nix.toml auto update when go.mod/go… #1

	name: gomod2nix auto update
	on:
	push:
	paths:
	- 'go.mod'
	- 'go.sum'
	- '.github/workflows/gomod2nix.yml'
	jobs:
	gomod2nix:
	name: gomod2nix update
	runs-on: ubuntu-latest
	steps:
	- name: Set up nix
	uses: cachix/install-nix-action@v27
	with:
	nix_path: nixpkgs=channel:nixos-unstable

	- name: Set up Go
	uses: actions/setup-go@master
	with:
	go-version: "1.20"

	- name: Check out code into the Go module directory
	uses: actions/checkout@master

	- name: gomod2nix update
	run: \|
	nix run github:nix-community/gomod2nix
	- name: Commit back
	if: ${{ !github.head_ref }}
	continue-on-error: true
	run: \|
	git config --local user.name 'github-actions[bot]'
	git config --local user.email '41898282+github-actions[bot]@users.noreply.github.com'
	git add --all
	git commit -m "chore: bump deps"
	- name: Create Pull Request
	if: ${{ !github.head_ref }}
	continue-on-error: true
	uses: peter-evans/create-pull-request@v4

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