fix(deps): Allow @11ty/eleventy-img v6 to be used, not only v5

Author: Michael Großklaus

package.json

@@ -38,7 +38,7 @@
     "prettier": "^3.3.3"
   },
   "peerDependencies": {
-    "@11ty/eleventy-img": "^5.0.0",
+    "@11ty/eleventy-img": ">5.0.0",
     "twig": "^1.17.1"
   }
 }