Merge pull request #82 from laminas/dependabot/docker/composer-2.2.9

build(deps): Bump composer from 2.2.6 to 2.2.9

Author: Ocramius

Dockerfile

@@ -1,6 +1,6 @@
 # Aliasing base images, so we can change just this, when needing to upgrade or pull base layers
 FROM ubuntu:20.04 AS base-distro
-FROM composer:2.2.6 AS composer
+FROM composer:2.2.9 AS composer
 
 
 FROM base-distro AS install-markdownlint