chore: Update Dockerfile to fix directory name in push workflow and update Laravel version to 3.1

.gitea/workflows/push_dockers.yml

@@ -26,7 +26,7 @@ jobs:
       env:
         DOCKER_HUB_USERNAME: ${{ secrets.DOCKER_HUB_USERNAME }}
       run: |
-        for dir in Docker/*; do
+        for dir in Dockers/*; do
           if [ -d "$dir" ]; then
             image_name=$(basename "$dir")
             version=$(cat "$dir/version")

Dockers/laravel-fpm/version

@@ -1 +1 @@
-3.0
+3.1