Bump rust from 1.76 to 1.79

Bumps rust from 1.76 to 1.79.

---
updated-dependencies:
- dependency-name: rust
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Dockerfile

@@ -1,5 +1,5 @@
 # Use the official Rust image as the base image
-FROM rust:1.76 as builder
+FROM rust:1.79 as builder
 WORKDIR /app
 COPY . .
 RUN cargo build --release --package discord_bridgebot