fab300b378 test: Enable ruff E713 lint (MarcoFalke)
Pull request description:
Membership tests of the form `not item in stuff` may be confusing, because they could be read as `(not item) in stuff`, which is different.
So enable the ruff E713 lint, which should also help to avoid having to go through review cycles for this.
ACKs for top commit:
bensig:
ACK fab300b378
l0rinc:
ACK fab300b378
rkrux:
lgtm crACK fab300b378
Tree-SHA512: c3eaf0fbe0dd22d8e04b896e98adaf28162fb748e6f7f5ebfd73b2020da66046bf8f0c1a27db5da05250366b98ded8c4a55d53edd8fa050e80521aee42ba3c5a