cmake: Require C++23

[chfast]

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.52%. Comparing base (bac6043) to head (b376a2c).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1217   +/-   ##
=======================================
  Coverage   94.52%   94.52%           
=======================================
  Files         175      175           
  Lines       19639    19639           
=======================================
  Hits        18564    18564           
  Misses       1075     1075           

Flag	Coverage Δ
eest_gmp	15.31% <ø> (ø)
eof_execution_spec_tests	19.69% <ø> (ø)
ethereum_tests	21.00% <ø> (ø)
ethereum_tests_silkpre	18.33% <ø> (ø)
execution_spec_tests	18.31% <ø> (ø)
unittests	92.11% <ø> (ø)

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Files with missing lines	Coverage Δ
lib/evmone/execution_state.hpp	95.58% <ø> (ø)
lib/evmone_precompiles/ripemd160.cpp	100.00% <ø> (ø)

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