Improved shrinking removing reverts from reproducers #1914

Job	Run time
Build Echidna on ubuntu-20.04	5m 30s
Build Echidna on macos-13	7m 17s
Build Echidna on windows-latest	12m 32s
Test with solc 0.4.25 on ubuntu-latest	5m 19s
Test with solc 0.5.7 on ubuntu-latest	3m 59s
Test with solc 0.6.12 on ubuntu-latest	3m 57s
Test with solc 0.7.5 on ubuntu-latest	3m 45s
Test with solc 0.4.25 on windows-latest	4m 20s
Test with solc 0.5.7 on windows-latest	4m 43s
Test with solc 0.6.12 on windows-latest	4m 53s
Test with solc 0.7.5 on windows-latest	5m 13s
	1h 1m 28s

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