Update constraints

composer.json

@@ -26,7 +26,7 @@
     "require": {
         "composer-plugin-api": "^1.0.0",
         "cypresslab/gitelephant": "~1.0",
-        "lakedrops/dotenv": "^0.1",
+        "lakedrops/dotenv": "^1.0.0",
         "php": ">=5.6"
     },
     "require-dev": {