Dockerfile(deps): Bump composer from 307e4af to 8209324

Bumps composer from `307e4af` to `8209324`.

---
updated-dependencies:
- dependency-name: composer
  dependency-version: 2.9.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Dockerfile

@@ -1,4 +1,4 @@
-FROM composer:2.9.2@sha256:307e4af1e1206be7508243afa28a0bec8fc8255ce875a16d85a69c2689ea8b1a AS builder
+FROM composer:2.9.2@sha256:8209324ed15c43af0c5cc900cbb9fd01e94b84a94c4bb0969aa95d31d2d7e43d AS builder
 
 COPY composer.json /app/
 COPY composer.lock /app/