chore(ubi-rust-builder): Bump Rust toolchain to 1.81.0 (#902)

Author: NickLarsenNZ

ubi8-rust-builder/Dockerfile

@@ -13,7 +13,7 @@ LABEL maintainer="Stackable GmbH"
 # 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=1.80.1
+ENV RUST_DEFAULT_TOOLCHAIN_VERSION=1.81.0
 # Find the latest version here: https://crates.io/crates/cargo-cyclonedx
 # renovate: datasource=crate packageName=cargo-cyclonedx
 ENV CARGO_CYCLONEDX_CRATE_VERSION=0.5.5

ubi9-rust-builder/Dockerfile

@@ -10,7 +10,7 @@ LABEL maintainer="Stackable GmbH"
 # 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=1.80.1
+ENV RUST_DEFAULT_TOOLCHAIN_VERSION=1.81.0
 # Find the latest version here: https://crates.io/crates/cargo-cyclonedx
 # renovate: datasource=crate packageName=cargo-cyclonedx
 ENV CARGO_CYCLONEDX_CRATE_VERSION=0.5.5