Enhancement: Update composer/composer

[localheinz]

This pull request

• updates composer/composer as used for assembling composer-normalize.phar

💁‍♂️ For reference, see composer/composer@2.0.13...2.1.12.

[codecov]

Codecov Report

Merging #804 (a8928ad) into main (d4112fe) will increase coverage by 0.12%.
The diff coverage is 100.00%.

❗ Current head a8928ad differs from pull request most recent head 72af70b. Consider uploading reports for the commit 72af70b to get more accurate results

@@             Coverage Diff              @@
##               main     #804      +/-   ##
============================================
+ Coverage     84.48%   84.61%   +0.12%     
- Complexity       57       59       +2     
============================================
  Files             4        4              
  Lines           245      247       +2     
============================================
+ Hits            207      209       +2     
  Misses           38       38              

Impacted Files	Coverage Δ
src/Command/NormalizeCommand.php	91.36% <100.00%> (+0.07%)	⬆️

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