fix: let amend_pypi_purls() always use reqwest client with the mirror… #1795

Job	Run time
Cargo Machete	1m 3s
Cargo Vendor	53s
determine changes	7s
check-cli-docs	1m 49s
pre-commit	3m 12s
build binary \| macos x86_64	6m 45s
build binary \| windows aarch64	5m 5s
build binary \| linux x86_64	2m 28s
build binary \| macos aarch64	4m 54s
build binary \| windows x86_64	4m 33s
cargo test \| ubuntu	4m 50s
cargo test \| macos aarch64	4m 0s
cargo test \| macos x86_64	7m 59s
cargo rustdoc \| ubuntu	1m 16s
cargo test \| windows	9m 0s
Integration tests \| linux x86_64	4m 15s
Pytest \| linux x86_64	57s
Downstream tests \| linux x86_64	5m 26s
Wheel Tests \| linux x86_64 / Test Installation of Common Wheels \| linux-x86_64	2m 0s
Integration tests \| windows x86_64	9m 54s
Pytest \| windows x86_64	6m 48s
Downstream tests \| windows x86_64	10m 17s
Wheel Tests \| windows x86_64 / Test Installation of Common Wheels \| windows-x86_64	5m 6s
Pytest \| macos aarch64	1m 40s
Downstream tests \| macos aarch64	1m 55s
Integration tests \| macos aarch64	5m 5s
Wheel Tests \| macos aarch64 / Test Installation of Common Wheels \| macos-aarch64	1m 30s
	1h 52m 47s

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