chore: bump to v0.49.0 (#5452)

## Description
Bumps repo to 0.49.0, made this a major one after some thought as we
longer support beta-4 as tooling with this release.
Also ran `cargo update` as this is a breaking change

---------

Co-authored-by: Sophie Dankel <47993817+sdankel@users.noreply.github.com>
Co-authored-by: Joshua Batty <joshpbatty@gmail.com>

Author: 3 people

Cargo.lock

@@ -1,5 +1,5 @@
 # Stage 1: Build
-FROM lukemathwalker/cargo-chef:latest-rust-1.73 as chef
+FROM lukemathwalker/cargo-chef:latest-rust-1.75 as chef
 WORKDIR /build/
 # hadolint ignore=DL3008
 RUN apt-get update && \