Bump py-cord to 2.7 #2430

Job	Run time
flake8	12s
pymarkdown	10s
ruff-lint	9s
uv-check	7s
pre-commit / autofix-pre-commit	2m 10s
mypy (package)	29s
pytest	17s
mypy (tests)	20s
build-and-publish	-1s
release	0s
	3m 53s

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