update ada::idna to c++20 #1504

	name: Alpine Linux

	on:
	pull_request:
	types: [opened, synchronize, reopened, ready_for_review]
	paths-ignore:
	- '**.md'
	- 'docs/**'
	push:
	branches:
	- main
	paths-ignore:
	- '**.md'
	- 'docs/**'

	permissions:
	contents: read

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	ubuntu-build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
	- name: start docker
	run: \|
	docker run -w /src -dit --name alpine -v $PWD:/src alpine:latest
	echo 'docker exec alpine "$@";' > ./alpine.sh
	chmod +x ./alpine.sh
	- name: install packages
	run: \|
	./alpine.sh apk update
	./alpine.sh apk add build-base cmake g++ linux-headers git bash icu-dev
	- name: cmake
	run: \|
	./alpine.sh cmake -DADA_BENCHMARKS=ON -B build_for_alpine
	- name: build
	run: \|
	./alpine.sh cmake --build build_for_alpine
	- name: test
	run: \|
	./alpine.sh bash -c "cd build_for_alpine && ctest ."

Provide feedback