Update update_leaderboard.sh #81

	name: Update our AoC leaderboard in a markdown table
	on:
	push:
	branches:
	- 'master'
	jobs:
	update_readme:
	runs-on: ubuntu-latest
	steps:
	- name: Check out repo
	uses: actions/checkout@v2
	with:
	ref: 'master'
	- name: Merge master on leaderboard
	run: \|-
	git config --global user.email "[email protected]"
	git config --global user.name "README-bot"
	git fetch origin leaderboard:leaderboard
	git merge --allow-unrelated-histories -s ours leaderboard
	git switch leaderboard
	git merge --no-ff --no-commit master
	git commit -m "Merge branch 'leaderboard'"
	- name: Update leaderboard
	run: ./update_leaderboard.sh
	env:
	COOKIE: ${{ secrets.COOKIE }}
	- name: Commit, push and merge if changed
	run: \|-
	git diff
	git config --global user.email "[email protected]"
	git config --global user.name "README-bot"
	git add -A
	git commit -m "Update leaderboard" \|\| exit 0
	git push origin leaderboard
	git switch master
	git merge leaderboard
	git push

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