Upgrade k8s-openapi to 0.22 and bump MK8SV to 1.25

[clux]

Propagating the new k8s-openapi release, which as usual requires a few propagating steps and a new minor release. Will do a release after merging this.

cargo upgrade -p k8s-openapi -i
just bump-k8s

Trivial chores to make it work as intended:

• shifted one integer in the justfile recipe down to get it to give me the right MK8SV (otherwise it gave me 1.26).
• k3s alignment in CI (auto-bump picked a tag in coverage that didn't exist, and usual action takes minor versions)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.9%. Comparing base (96053fd) to head (08a4303).

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1485     +/-   ##
=======================================
+ Coverage   74.1%   74.9%   +0.8%     
=======================================
  Files         78      78             
  Lines       6801    6801             
=======================================
+ Hits        5037    5091     +54     
+ Misses      1764    1710     -54     

see 2 files with indirect coverage changes

[clux]

Going to send this through to reduce confusion w.r.t. k8s-openapi incompatibilities and release 0.91