fix: prevent adding /usr/bin if it is already on the PATH #863

Job	Run time
Build (ubuntu-22.04, 20, 8)	1m 58s
Build-Executable-windows-2022	1m 56s
Build-Executable-ubuntu-22.04	1m 23s
Build-Executable-macos-12	4m 28s
Test-ubuntu.dockerfile	5m 8s
Test-fedora.dockerfile	4m 14s
Test-arch.dockerfile	3m 37s
Test-ubuntu-mingw.dockerfile	4m 1s
Test-windows-2022	3h 17m 27s
Test-windows-2019	3h 17m 26s
Test-ubuntu-22.04	7m 50s
Test-ubuntu-20.04	3h 17m 40s
Test-macos-12	5m 14s
Test-macos-11	5m 43s
Release	1s
	10h 38m 6s

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