Pin the dependencies of the Rust code gen tools

In the previous commit, only the version of `protoc-gen-prost/tonic` was
pinned. However, Cargo would still ignore the lock file and use the
latest version of dependencies for `protoc-gen-prost/tonic`. This meant
that any new release of dependencies (such as `prost-build`) could
result in differences in the generated code.

This commit addresses the issue by adding `--locked` to the `cargo
install` command, ensuring Cargo respects the lock file when installing
code generation tools.

The Rust code has been regenerated using this updated configuration.

codegen/Dockerfile

@@ -28,7 +28,7 @@ RUN go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.3
 
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain 1.81.0 --profile minimal; \
     . $HOME/.cargo/env; \
-    cargo install protoc-gen-prost@0.4.0 protoc-gen-prost-crate@0.4.1 protoc-gen-tonic@0.4.1
+    cargo install --locked protoc-gen-prost@0.4.0 protoc-gen-prost-crate@0.4.1 protoc-gen-tonic@0.4.1
 
 ENV PATH="${PATH}:/root/.cargo/bin"
 

rust/src/google.rpc.rs

@@ -7,6 +7,7 @@
 ///
 /// You can find out more about this error model and how to work with it in the
 /// [API Design Guide](<https://cloud.google.com/apis/design/errors>).
+#[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct Status {
     /// The status code, which should be an enum value of