chore(deps): bump android-adapters from 2.1.1 to 4.0.0 (#2230)

Bumps [android-adapters](https://github.com/realm/realm-java) from 2.1.1 to 4.0.0.
- [Release notes](https://github.com/realm/realm-java/releases)
- [Changelog](https://github.com/realm/realm-java/blob/master/CHANGELOG.md)
- [Commits](realm/realm-java@v2.1.1...v4.0.0)

---
updated-dependencies:
- dependency-name: io.realm:android-adapters
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

build.gradle

@@ -56,7 +56,7 @@ ext {
     seekBarLibraryVersion = '1.2.9'
     carouselPickerVersion = '1.2'
     speedView = '1.2.0'
-    realmAdapter = '2.1.1'
+    realmAdapter = '4.0.0'
     okHttpVersion = '4.0.1'
 
     // Map related versions