tests: set interfaces-cups-control test to manual

[sergiocazzolato]

This test is affected by this issue https://bugs.launchpad.net/snapd/+bug/1964262

[codecov-commenter]

Codecov Report

Merging #11490 (b64552b) into master (af8a1ea) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #11490   +/-   ##
=======================================
  Coverage   78.45%   78.46%           
=======================================
  Files         933      933           
  Lines      108159   108167    +8     
=======================================
+ Hits        84859    84873   +14     
+ Misses      18039    18035    -4     
+ Partials     5261     5259    -2     

Flag	Coverage Δ
unittests	78.46% <ø> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
cmd/snap/cmd_debug_state.go	70.18% <0.00%> (-0.46%)	⬇️
overlord/devicestate/devicemgr.go	78.27% <0.00%> (+0.01%)	⬆️
overlord/state/task.go	96.59% <0.00%> (+0.07%)	⬆️
cmd/snap/cmd_reboot.go	93.18% <0.00%> (+0.15%)	⬆️
overlord/devicestate/systems.go	73.12% <0.00%> (+0.68%)	⬆️
store/cache.go	71.15% <0.00%> (+1.92%)	⬆️
osutil/synctree.go	79.24% <0.00%> (+2.83%)	⬆️

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[sergiocazzolato]

Updating the snap test-snapd-cups-control-consumer the issue is not reproducible anymore

[mardy]

@sergiocazzolato, is this still needed?