Bump py-cord to 2.7 #2413

Job	Run time
pymarkdown	10s
flake8	11s
ruff-lint	8s
uv-check	7s
pre-commit / autofix-pre-commit	2m 42s
mypy (tests)	20s
mypy (package)	25s
pytest	18s
build-and-publish	0s
release	0s
	4m 21s

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