build(deps): bump composer from 2.7.8 to 2.7.9

Bumps composer from 2.7.8 to 2.7.9.

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

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

Dockerfile

@@ -2,7 +2,7 @@
 FROM caddy:2.8.4 AS caddy
 
 # development
-FROM composer:2.7.8 AS composer
+FROM composer:2.7.9 AS composer
 
 ARG APPLICATION_ENV=development
 ENV APPLICATION_ENV=${APPLICATION_ENV}