Fix: Drop support for PHP 8.0

[localheinz]

This pull request

• drops support for PHP 8.0

[codecov]

Codecov Report

Merging #702 (90ffcb0) into main (789b0d5) will increase coverage by 3.44%.
The diff coverage is 100.00%.

❗ Current head 90ffcb0 differs from pull request most recent head 72ea604. Consider uploading reports for the commit 72ea604 to get more accurate results

@@             Coverage Diff              @@
##               main     #702      +/-   ##
============================================
+ Coverage     95.34%   98.79%   +3.44%     
+ Complexity       50       48       -2     
============================================
  Files             6        6              
  Lines           172      166       -6     
============================================
  Hits            164      164              
+ Misses            8        2       -6     

Impacted Files	Coverage Δ
src/Constructs.php	98.16% <100.00%> (+5.12%)	⬆️

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