New review comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/28305#discussion_r589999058

Comment:
```suggestion
checksum=e4a87f0b573201a0f3727fa18a516b055fd1107e0e5477cded4a2de497df1dd4
# tests not working on CI
make_check=extended

do_check() {
	# This exclusion can be removed for 2.1.1 or 2.2.0 (https://github.com/rthalley/dnspython/issues/622)
	PYTHONPATH=$(cd build/lib* && pwd) pytest -k 'not test_unpickle'
}
```