[WF:release, WF:test, WF:test_build] Update Rust toolchain to `1.81.0` #27

	name: test

	on:
	push:
	pull_request:
	branches:
	- master
	workflow_dispatch:

	jobs:
	test:
	strategy:
	fail-fast: false
	matrix:
	os:
	- windows-latest
	- ubuntu-latest
	name: Testing on ${{ matrix.os }}
	runs-on: ${{ matrix.os }}
	steps:
	# Checkout repo
	- uses: actions/checkout@v4
	# Setup Node.js
	- uses: actions/setup-node@v4
	with:
	node-version: 20
	# Install npm deps
	- name: Install npm dependencies
	run: npm install --no-audit
	# Build Vue frontend
	- name: Build frontend
	run: npm run build
	# Set up Rust and Cargo
	- name: Set up Rust toolchain
	uses: dtolnay/rust-toolchain@v1
	with:
	toolchain: 1.81.0
	# Run tests
	- name: Run tests
	run: cargo test-backend

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