Search for `python3` in unix virtual environments (#3798) #6919

Job	Run time
cargo fmt	23s
cargo clippy \| ubuntu	53s
cargo clippy \| windows	1m 0s
Determine changes	5s
build binary \| linux	1m 5s
build binary \| macos aarch64	1m 17s
build binary \| windows	1m 57s
build binary \| macos x86_64	1m 43s
cargo shear	22s
cargo test \| ubuntu	4m 32s
cargo test \| windows	5m 59s
check windows trampoline	2m 15s
cargo test \| macos	5m 0s
benchmarks	5m 43s
check cache \| ubuntu	48s
check system \| python on debian	49s
ecosystem test \| prefecthq/prefect	1m 58s
check system \| python on fedora	31s
ecosystem test \| pallets/flask	10s
integration test \| conda on ubuntu	25s
check system \| python on opensuse	40s
check system \| python on ubuntu	24s
check system \| alpine	27s
check system \| amazonlinux	28s
check system \| python via pyenv	2m 5s
check system \| pypy on ubuntu	38s
check system \| pyston	3m 49s
check system \| python on rocky linux 8	28s
check system \| python on rocky linux 9	25s
check system \| homebrew python on macos aarch64	20s
check system \| python on macos aarch64	20s
check cache \| macos aarch64	12s
check system \| python on macos x86_64	23s
check system \| python3.13 on windows	1m 52s
check system \| python3.10 on windows	40s
check system \| python3.12 via chocolatey	1m 1s
check system \| embedded python3.10 on windows	28s
check system \| python3.10 on windows x86	45s
check system \| conda3.8 on linux	50s
check system \| conda3.11 on linux	44s
check system \| conda3.8 on windows	2m 20s
check system \| conda3.11 on windows	2m 20s
check system \| conda3.8 on macos	45s
check system \| conda3.11 on macos	1m 37s
	1h 0m 56s

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