Rollup merge of rust-lang#113227 - weihanglo:update-cargo, r=weihanglo

Update cargo

6 commits in 03bc66b55c290324bd46eb22e369c8fae1908f91..5b377cece0e0dd0af686cf53ce4637d5d85c2a10
2023-06-23 23:27:46 +0000 to 2023-06-30 00:01:00 +0000
- Add READMEs for the credential helpers. (rust-lang/cargo#12322)
- Add some more documentation for Source download functions. (rust-lang/cargo#12319)
- Don't try to compile cargo-credential-gnome-secret on non-Linux platforms. (rust-lang/cargo#12321)
- refactor: use macro to remove duplication of workspace inheritable fields getters (rust-lang/cargo#12317)
- doc: should be `.cargo-ok` (rust-lang/cargo#12318)
- refactor(registry): extract and rearrange items to their own modules (rust-lang/cargo#12290)

r? `@ghost`

Author: matthiaskrgr