MPP-3487: Update to Python 3.11.10, prepare for Python 3.12, 3.13 #4865

	name: No unresolved conflicts
	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]
	jobs:
	detect-unresolved-conflicts:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: List files with merge conflict markers
	run: git --no-pager grep "<<<<<<<" ":(exclude).github/workflows/conflicts.yml" \|\| true
	- name: Fail or succeed job if any files with merge conflict markers have been checked in
	# Find lines containing "<<<<<<<", then count the number of lines.
	# 0 matching lines results in exit code 0, i.e. success.
	run: exit $(git grep "<<<<<<<" ":(exclude).github/workflows/conflicts.yml" \| wc --lines)

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