ci: install dependencies

Signed-off-by: Patrizio Bekerle <patrizio@bekerle.com>

Author: pbek

.github/workflows/format-check.yml

@@ -27,4 +27,4 @@ jobs:
       - name: 🔧 Install devenv.sh
         run: nix profile install nixpkgs#devenv
       - name: 🌳 Format code
-        run: devenv shell "just format"
+        run: devenv shell "composer install && just format"