Convert lockfile to new format

[jyn514]

This also contains an update to rust_lang_team, due to
rust-lang/cargo#8821.

The hope is this will make the diff in #543 easier to read. There are no changes other than the team update.

[jyn514]

This commit can be verified by running cargo tree before and after the change. Here's the diff:

$ diff before after 
456c456
< ├── rust_team_data v1.0.0 (https://github.com/rust-lang/team#8d8902d7)
---
> ├── rust_team_data v1.0.0 (https://github.com/rust-lang/team#a3c474be)

[jyn514]

CI is failing due to #550 .

[pietroalbini]

@bors r+

Thanks!

[bors]

📌 Commit 07f7fae has been approved by pietroalbini

[bors]

⌛ Testing commit 07f7fae with merge 261696d...

[bors]

☀️ Test successful - checks-actions
Approved by: pietroalbini
Pushing 261696d to master...