silx/2.0.1+dfsg-3ubuntu1 vs pytest/8.2.2-1

[Chris Peterson]

Silx autopkgtests fail against pytest 8.2 only on ppc64el

https://objectstorage.prodstack5.canonical.com/swift/v1/AUTH_0f9aae918d5b4744bf7b827671c86842/autopkgtest-oracular/oracular/ppc64el/s/silx/20240607_144904_0f43c@/log.gz

Helpful hint: the FAIL non-zero exit status 247 is may not be the interpreter segfaulting, it's just the way the test runner is setup. I fixed a previous issue where a failing test "crashed" the runner but I was able to get a more useful error message setting up the tests in a regular manner.