Update Dockerfile to Rust 1.79 (#1476)

This should fix failing tests.

Author: jaymell

server/Dockerfile

@@ -1,5 +1,5 @@
 # Base build
-FROM rust:1.76-slim-bookworm AS build
+FROM rust:1.79-slim-bookworm AS build
 
 RUN apt-get update && apt-get install -y \
         build-essential=12.* \