test: add manylinux_2_28 tests

[mayeut]

draft just to see if we're seeing complaints with GLIBCXX_3.4.25 symbol version.

[mayeut]

webhooks & GHA currently out of order: https://www.githubstatus.com/incidents/vvthhf8gxt80
let's wait to see how it goes...

[codecov]

Codecov Report

Merging #369 (4bce4ab) into main (fe45465) will decrease coverage by 0.05%.
The diff coverage is n/a.

❗ Current head 4bce4ab differs from pull request most recent head 3d9bb59. Consider uploading reports for the commit 3d9bb59 to get more accurate results

@@            Coverage Diff             @@
##             main     #369      +/-   ##
==========================================
- Coverage   92.42%   92.36%   -0.06%     
==========================================
  Files          23       23              
  Lines        1267     1258       -9     
  Branches      311      307       -4     
==========================================
- Hits         1171     1162       -9     
  Misses         55       55              
  Partials       41       41              

Impacted Files	Coverage Δ
src/auditwheel/repair.py	85.59% <0.00%> (-0.70%)	⬇️
src/auditwheel/main_repair.py	90.47% <0.00%> (-0.15%)	⬇️
src/auditwheel/patcher.py	100.00% <0.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update fe45465...3d9bb59. Read the comment docs.

[mayeut]

we should probably not try to strip system libraries that get grafted.
the tests fails on musllinux because libstdc++ and/or libgcc_s get stripped.

[EwoutH]

Now that pypa/manylinux#1277 is merged, can this PR be rebased?