fix: migrate from jcabillot/phpapache to dunglas/frankenphp

Caddyfile

@@ -6,5 +6,6 @@
 :8080 {
     root * /app/public
     encode zstd br gzip
+    php_server
     file_server
 }

renovate.json

@@ -1,17 +1,3 @@
 {
-  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "customManagers": [
-    {
-      "customType": "regex",
-      "description": "Detect ARG VERSION pin for jcabillot/phpapache base image",
-      "managerFilePatterns": [
-        "/^Dockerfile$/"
-      ],
-      "matchStrings": [
-        "ARG\\s+VERSION=\"(?<currentValue>[^\"]+)\""
-      ],
-      "depNameTemplate": "jcabillot/phpapache",
-      "datasourceTemplate": "docker"
-    }
-  ]
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json"
 }