chore(CI): Adjust testing matrix for Nextcloud 31 on main

[nickvergessen]

Signed-off-by: Joas Schilling coding@schilljs.com

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 22.97%. Comparing base (e0eb088) to head (d933646).
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #6652   +/-   ##
=========================================
  Coverage     22.97%   22.97%           
  Complexity      475      475           
=========================================
  Files           252      252           
  Lines         12125    12125           
  Branches       2302     2315   +13     
=========================================
  Hits           2786     2786           
  Misses         9012     9012           
  Partials        327      327           

Flag	Coverage Δ
javascript	14.51% <ø> (ø)
php	59.30% <ø> (ø)

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[st3iny]

Superseded by #6662