There's a closed pull request on the void-packages repository

rust-analyzer: update to 2022.01.03.
https://github.com/void-linux/void-packages/pull/34856

Description:
#### Testing the changes
- I tested the changes in this PR: **YES**

#### Local build testing
- I built this PR locally for my native architecture, x86-64 glibc

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Now that Rust 1.57 is merged, we can update rust-analyzer, which since October 21 has required the 2021 edition (introduced in Rust 1.56).