Simplify/update some dev dependencies versions

Author: MoOx

package.json

@@ -35,14 +35,14 @@
     "release": "npmpub"
   },
   "devDependencies": {
-    "bs-platform": "^5.2.0",
-    "husky": "^1.3.0",
-    "lint-staged": "^10.1.1",
+    "bs-platform": "^8.0.0",
+    "husky": "^4.0.0",
+    "lint-staged": "^10.0.0",
     "npmpub": "^5.0.0",
-    "prettier": "^1.18.0",
+    "prettier": "^2.0.0",
     "react-native-linear-gradient": "2.5.6",
-    "reason-react": "0.7.0",
-    "reason-react-native": "0.60.1"
+    "reason-react": "^0.9.0",
+    "reason-react-native": "^0.62.0"
   },
   "prettier": {
     "trailingComma": "all"

src/ReactNativeLinearGradient.re

@@ -1,6 +1,6 @@
 type position;
 
-[@bs.obj] external position: (~x: float, ~y: float, unit) => position = "";
+[@bs.obj] external position: (~x: float, ~y: float, unit) => position;
 
 [@bs.module "react-native-linear-gradient"] [@react.component]
 external make: