fix: detect correctly v3 version when using sha in `image.tag` #922

	---
	name: Test

	on:
	workflow_call:
	workflow_dispatch:
	pull_request:

	jobs:
	test:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Checkout master
	run: git checkout master && git checkout - && git rev-parse HEAD

	- name: Configure Git
	run: \|
	git config user.name "$GITHUB_ACTOR"
	git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
	- name: Lint
	run: make lint

	- name: Test
	run: make test

	- name: Track docs
	run: \|
	if ! [ -z "$(git diff traefik/Chart.yaml \| grep version:)" ]; then
	make docs
	if ! [ -z "$(git status \| grep traefik/VALUES.md)" ]; then
	echo "Traefik values have changed. Run make docs"
	exit 1
	fi
	fi

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