Revert package version enforcing for xmldiff in CI

[ggbecker]

Description:

• Revert package version enforcing for xmldiff in CI.
  • This package was broken on 2.6.0 but there is a new 2.6.1 that should fix the issue with namespaces.

Rationale:

• Fixes Gating ctest on Fedora latest is failing on a ssg python module test #10417

[github-actions]

Start a new ephemeral environment with changes proposed in this pull request:

Fedora Environment

Oracle Linux 8 Environment

[codeclimate]

Code Climate has analyzed commit 1277672 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 52.4% (0.0% change).

View more on Code Climate.

[ggbecker]

the testing farm centos-stream-8 is failing on openscap with the following message:

E: oscap: Can't statvfs /proc/sys/fs/binfmt_misc: errno=19, No such device.

from: https://artifacts.dev.testing-farm.io/0b510569-66bf-417b-b5c5-68fa0371aae3/

Maybe @mildas can help with this one.

[jan-cerny]

@ggbecker @mildas

I was just reporting it

see #10450

[jan-cerny]

I have seen that the test python-unit-ssg-module passed on the Fedora latest in the CI and I have seen that xmldiff 2.6.1 from pip has been used in that run.

The testing-farm jobs fail is unrelated to the contents of this PR and is tracked in #10450 and we can waive it here.

[ggbecker]

I'm going to merge it bypassing the requirements then. Thanks @jan-cerny

[jan-cerny]

Thanks