chore(ubi9): Bump stable Rust toolchain to 1.89.0

Author: Techassi

ubi9-rust-builder/Dockerfile

@@ -15,7 +15,7 @@ ENV RUSTUP_VERSION=1.28.1
 # This SHOULD be kept in sync with operator-templating and other tools to reduce build times
 # Find the latest version here: https://doc.rust-lang.org/stable/releases.html
 # renovate: datasource=github-releases packageName=rust-lang/rust
-ENV RUST_DEFAULT_TOOLCHAIN_VERSION=1.87.0
+ENV RUST_DEFAULT_TOOLCHAIN_VERSION=1.89.0
 # Find the latest version here: https://crates.io/crates/cargo-cyclonedx
 # renovate: datasource=crate packageName=cargo-cyclonedx
 ENV CARGO_CYCLONEDX_CRATE_VERSION=0.5.7