Update version of uv used to 0.11.7

[jafingerhut]

as several other p4lang repositories already use today.

[jafingerhut]

@chreekat This is low priority, because this pna repository is not updated very often (one of the reasons why this outdated CI script failure hasn't been noticed before). If you have any spare cycles to suggest how to update the script of the failing CI test on this PR so that it can pass again, that would be great.

I did recently approve some PRs where fruffy was updating docker builds for PI, behavioral-model, and p4c repos, and using any docker image produced by the p4c docker build (if I am correct that there even is such a thing, which I have not verified), that should be sufficient for this repository.

• Recently merged p4c PR that might be relevant: p4lang/p4c@ff50100

This repository does not need anything other than running an executable named p4test, plus any other files that executable uses, e.g. a p4include directory containing file core.p4 and probably a few others.