build(deps): bump rust in the image-updates group (#7)

Bumps the image-updates group with 1 update: rust.


Updates `rust` from 1.80-alpine to 1.81-alpine

---
updated-dependencies:
- dependency-name: rust
  dependency-type: direct:production
  dependency-group: image-updates
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM rust:1.80-alpine@sha256:1f5aff501e02c1384ec61bb47f89e3eebf60e287e6ed5d1c598077afc82e83d5 AS build
+FROM rust:1.81-alpine@sha256:d6e876ca5fe200f4ac60312b95606f0b042699c4cf6a19493b7d2a2ebbfb337b AS build
 RUN apk add build-base && rm -rf /var/cache/apk/*
 
 WORKDIR /usr/src/app