fix: remove `pixi global` support on powerpc64le #136

Job	Run time
Cargo Machete	1m 0s
pre-commit	41s
determine changes	5s
build binary \| windows aarch64	4m 3s
build binary \| macos x86_64	0s
build binary \| linux x86_64	2m 46s
build binary \| macos aarch64	3m 59s
build binary \| windows x86_64	3m 44s
cargo test \| ubuntu	4m 21s
cargo test \| macos aarch64	4m 32s
cargo test \| macos x86_64	0s
cargo test \| windows	7m 28s
cargo rustdoc \| ubuntu	56s
cargo fmt \| ubuntu	14s
cargo clippy \| ubuntu	53s
pytest integration \| linux x86_64	9m 2s
test wheel installation \| linux x86_64 / Test Installation of Common Wheels \| linux-x86_64	1m 54s
pytest integration \| macos aarch64	4m 19s
test wheel installation \| macos aarch64 / Test Installation of Common Wheels \| macos-aarch64	2m 0s
pytest integration \| windows x86_64	5m 9s
test wheel installation \| windows x86_64 / Test Installation of Common Wheels \| windows-x86_64	2m 59s
	1h 0m 5s

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