Use a singleton for the DB connection object #9511

	name: No unresolved conflicts
	on:
	pull_request:
	branches: [ main, localization ]
	jobs:
	detect-unresolved-conflicts:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: List files with merge conflict markers
	# Encode conflict markers so this file does not trigger git's conflict detection.
	run: git --no-pager grep "$(echo 'PDw8PDw8PAo=' \| base64 -d)" ":(exclude).github/" \|\| true
	- name: Fail or succeed job if any files with merge conflict markers have been checked in
	# Find lines containing conflict markers then count the number of lines.
	# 0 matching lines results in exit code 0, i.e. success.
	run: exit $(git grep "$(echo 'PDw8PDw8PAo=' \| base64 -d)" ":(exclude).github/" \| wc --lines)

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