Respect `--find-links` in `lock` and `sync` #7831

Job	Run time
build binary \| linux	1m 26s
build binary \| macos aarch64	1m 12s
build binary \| macos x86_64	1m 36s
build binary \| windows	1m 59s
cargo clippy \| ubuntu	45s
cargo clippy \| windows	1m 12s
cargo fmt	24s
cargo shear	30s
cargo test \| ubuntu	3m 53s
cargo test \| windows	5m 42s
cargo test \| macos	4m 35s
Determine changes	11s
check windows trampoline	2m 41s
benchmarks	4m 58s
check system \| python on macos aarch64	28s
check system \| homebrew python on macos aarch64	18s
check cache \| macos aarch64	11s
integration test \| conda on ubuntu	27s
ecosystem test \| prefecthq/prefect	2m 5s
check cache \| ubuntu	53s
ecosystem test \| pallets/flask	15s
integration test \| github actions	11s
check system \| python on debian	37s
check system \| python on fedora	31s
check system \| alpine	22s
check system \| python on ubuntu	14s
check system \| python on opensuse	42s
check system \| python via pyenv	1m 54s
check system \| pypy on ubuntu	45s
check system \| pyston	3m 49s
check system \| python on rocky linux 8	30s
check system \| python on rocky linux 9	32s
check system \| amazonlinux	27s
check system \| python on macos x86_64	22s
check system \| python3.10 on windows	47s
check system \| python3.10 on windows x86	43s
check system \| conda3.8 on linux	34s
check system \| python3.12 via chocolatey	54s
check system \| conda3.11 on linux	40s
check system \| python3.13 on windows	1m 19s
check system \| conda3.8 on windows	1m 53s
check system \| embedded python3.10 on windows	24s
check system \| conda3.11 on windows	1m 56s
check system \| conda3.8 on macos	43s
check system \| conda3.11 on macos	44s
	57m 14s

Provide feedback