spread.yml: enable tests on UC 26

[valentindavid]

[github-actions[bot]]

Wed Jan 14 16:46:37 UTC 2026 The following results are from: https://github.com/canonical/snapd/actions/runs/20988898054

Failures:

Preparing:

• openstack-ext:ubuntu-22.04-64:tests/nested/manual/hybrid-remodel
• openstack-ext:ubuntu-26.04-64:tests/nested/manual/hybrid-xkb-kcmdline

Executing:

• openstack:debian-sid-64:tests/main/interfaces-network-status-classic
• openstack-ext:ubuntu-24.04-64:tests/nested/manual/minimal-smoke:secboot_enabled
• openstack-ext:ubuntu-24.04-64:tests/nested/manual/minimal-smoke:secboot_disabled
• openstack-ext:ubuntu-26.04-64:tests/nested/manual/minimal-smoke:secboot_enabled
• openstack-ext:ubuntu-26.04-64:tests/nested/manual/minimal-smoke:secboot_disabled
• openstack:ubuntu-26.04-64:tests/main/upgrade-from-release
• openstack:ubuntu-26.04-64:tests/main/lxd:snapd_cgroup_just_inside

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 77.50%. Comparing base (6b7eaee) to head (4f9c194). :warning: Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #15887   +/-   ##
=======================================
  Coverage   77.50%   77.50%           
=======================================
  Files        1343     1344    +1     
  Lines      184075   184079    +4     
  Branches     2442     2442           
=======================================
+ Hits       142660   142670   +10     
+ Misses      32780    32771    -9     
- Partials     8635     8638    +3     

Flag	Coverage Δ
unittests	77.50% <ø> (+<0.01%)	:arrow_up:

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[valentindavid]

We can disable openstack-ext:ubuntu-26.04-64:tests/nested/manual/hybrid-xkb-kcmdline in a follow up. 26 is not required. And there might more tests by the time we merge.

Other failures are known issues or unrelated.