Misc updates

[luispabon]

• Update all php dependencies
• Update phpstan
• Update infection
• Update phpunit & config file to latest schema
• Update task names on concourse pipelines to be compliant with latest versions
• Update version to 3.2.4

[codecov]

Codecov Report

Merging #52 (3924a11) into master (7bdd0ba) will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff             @@
##              master       #52   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity        54        54           
===========================================
  Files              7         7           
  Lines            179       179           
===========================================
  Hits             179       179           

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