Update the version to 0.9.0

Author: Marek Suchánek

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "bugzilla_query"
 authors = ["Marek Suchánek <[email protected]>"]
-version = "0.8.1"
+version = "0.9.0"
 edition = "2021"
 # Check the Rust version using `cargo msrv verify`.
 rust-version = "1.56"