Fix: Require composer/composer:2.0.13 for composer-normalize.phar

[localheinz]

This pull request

• requires composer/composer:2.0.13 for composer-normalize.phar

Fixes #736.

[codecov]

Codecov Report

Merging #743 (031c5b4) into main (e1243f6) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main     #743   +/-   ##
=========================================
  Coverage     83.96%   83.96%           
  Complexity       57       57           
=========================================
  Files             4        4           
  Lines           237      237           
=========================================
  Hits            199      199           
  Misses           38       38           

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