Update validator requirement from 0.18 to 0.19 #4

	name: check-pr
	on:
	pull_request:
	jobs:
	check-pr:
	permissions: write-all
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: 'true'
	- uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	~/.rustup
	/usr/local/cargo
	target/
	key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
	- name: Install rust
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	components: clippy
	- name: Run rustfmt
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: --all -- --check
	- name: Run clippy
	uses: actions-rs/clippy@master
	with:
	args: --all -- -D warnings
	- name: Cargo Test
	uses: actions-rs/cargo@v1
	with:
	command: test
	args: -q
	- name: merge
	if: ${{ github.actor == 'dependabot[bot]' }}
	run: \|
	gh pr merge --auto --merge $GITHUB_HEAD_REF
	env:
	GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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