build(deps): bump uart_16550 from 0.3.1 to 0.3.2

Bumps [uart_16550](https://github.com/rust-osdev/uart_16550) from 0.3.1 to 0.3.2.
- [Changelog](https://github.com/rust-osdev/uart_16550/blob/master/Changelog.md)
- [Commits](rust-osdev/uart_16550@v0.3.1...v0.3.2)

---
updated-dependencies:
- dependency-name: uart_16550
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>