chore(release): 4.0.0 [skip ci]

# [4.0.0](v3.5.2...v4.0.0) (2021-11-22)

### chore

* make CI green ([#527](#527)) ([da12e92](da12e92))

### BREAKING CHANGES

* only Android API level >=21 (Android 5) and iOS >= 11 are supported��

apart from green CI, this fixed at least one bug as well

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@react-native-community/datetimepicker",
-  "version": "3.5.2",
+  "version": "4.0.0",
   "description": "DateTimePicker component for React Native",
   "main": "./src/index.js",
   "types": "src/index.d.ts",