Bump version to 0.9.20 (#17256)

## Summary

In #17254, I failed to bump the versions of the various internal crates,
so need to re-release.

crates/uv-python/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "uv-python"
-version = "0.0.8"
+version = "0.0.9"
 description = "This is an internal component crate of uv"
 edition = { workspace = true }
 rust-version = { workspace = true }

crates/uv-python/README.md

@@ -5,8 +5,8 @@
 This crate is an internal component of [uv](https://crates.io/crates/uv). The Rust API exposed here
 is unstable and will have frequent breaking changes.
 
-This version (0.0.8) is a component of [uv 0.9.18](https://crates.io/crates/uv/0.9.18). The source
-can be found [here](https://github.com/astral-sh/uv/blob/0.9.18/crates/uv-python).
+This version (0.0.9) is a component of [uv 0.9.20](https://crates.io/crates/uv/0.9.20). The source
+can be found [here](https://github.com/astral-sh/uv/blob/0.9.20/crates/uv-python).
 
 See uv's
 [crate versioning policy](https://docs.astral.sh/uv/reference/policies/versioning/#crate-versioning)