chore(deps-dev): bump vimeo/psalm from 5.26.1 to v6

[st3iny]

Unfortunately, upstream has set very strict PHP version requirements that fail to comply with our platform config despite being on the same minor version (8.1 vs ~8.1.17). So renovate fails to do the bump by itself.

Ref #6680 (comment)

Supersedes #6680

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 23.00%. Comparing base (056a8aa) to head (00e5fab).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #6682   +/-   ##
=========================================
  Coverage     23.00%   23.00%           
  Complexity      475      475           
=========================================
  Files           252      252           
  Lines         12112    12112           
  Branches       2310     2310           
=========================================
  Hits           2786     2786           
  Misses         8999     8999           
  Partials        327      327           

Flag	Coverage Δ
javascript	14.53% <ø> (ø)
php	59.30% <ø> (ø)

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