Dockerfile(deps): Bump composer from 2.9.2 to 2.9.3

Bumps composer from 2.9.2 to 2.9.3.

---
updated-dependencies:
- dependency-name: composer
  dependency-version: 2.9.3
  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:c4f6b39889c396b86fd3603c047bb73929f05fcaa887e78f172d366e0891062b AS builder
+FROM composer:2.9.3@sha256:f746ca10fd351429e13a6fc9599ccd41d4fc413e036ae8b0dad9e2041adcffcd AS builder
 
 COPY composer.json /app/
 COPY composer.lock /app/