Update Catch 2.13.9

[offa]

Cherry pick of #165, since GCC 12 is affected too.

[codecov[bot]]

Codecov Report

Merging #168 (5b7e7a8) into master (b070b89) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #168   +/-   ##
=======================================
  Coverage   35.86%   35.86%           
=======================================
  Files          53       53           
  Lines        2303     2303           
=======================================
  Hits          826      826           
  Misses       1477     1477           

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[mattgodbolt]

thanks @offa