Upgrade solidity version in tests to 0.8.x

[cgewecke]

#839

• Integration test are mostly using 0.8.17 now
• Unit / instrumentation tests using 0.8.24
• Removed some tests from the function instrumentation tests which were legacy parser regression tests
• Upgraded Hardhat dev dep to 2.19.5 to address solc settings property bug

⚠️ The stack-too-deep test has been skipped, Hoping to resolve #715 for the next version by instrumenting with a viaIR compatible technique - it should be unskipped as part of that PR.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (fbed395) 95.85% compared to head (13020f3) 95.85%.

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Additional details and impacted files

@@           Coverage Diff           @@
##           master     #843   +/-   ##
=======================================
  Coverage   95.85%   95.85%           
=======================================
  Files          19       19           
  Lines        1061     1061           
=======================================
  Hits         1017     1017           
  Misses         44       44           

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