Bump the rxjava group with 2 updates

Bumps the rxjava group with 2 updates: [io.reactivex.rxjava2:rxandroid](https://github.com/ReactiveX/RxAndroid) and [io.reactivex.rxjava2:rxjava](https://github.com/ReactiveX/RxJava).


Updates `io.reactivex.rxjava2:rxandroid` from 2.0.1 to 2.1.1
- [Release notes](https://github.com/ReactiveX/RxAndroid/releases)
- [Changelog](https://github.com/ReactiveX/RxAndroid/blob/3.x/CHANGES.md)
- [Commits](ReactiveX/RxAndroid@2.0.1...2.1.1)

Updates `io.reactivex.rxjava2:rxjava` from 2.1.3 to 2.2.21
- [Release notes](https://github.com/ReactiveX/RxJava/releases)
- [Changelog](https://github.com/ReactiveX/RxJava/blob/v2.2.21/CHANGES.md)
- [Commits](ReactiveX/RxJava@v2.1.3...v2.2.21)

---
updated-dependencies:
- dependency-name: io.reactivex.rxjava2:rxandroid
  dependency-version: 2.1.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: rxjava
- dependency-name: io.reactivex.rxjava2:rxjava
  dependency-version: 2.2.21
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: rxjava
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

app/build.gradle

@@ -86,8 +86,8 @@ dependencies {
     implementation 'com.google.android.flexbox:flexbox:3.0.0'
     implementation "androidx.annotation:annotation:1.2.0"
     // 3rd part Dependencies...
-    implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
-    implementation 'io.reactivex.rxjava2:rxjava:2.1.3'
+    implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'
+    implementation 'io.reactivex.rxjava2:rxjava:2.2.21'
     implementation 'com.squareup.retrofit2:retrofit:2.6.1'
     implementation 'com.squareup.retrofit2:converter-gson:2.6.1'
     implementation 'com.squareup.retrofit2:adapter-rxjava2:2.6.1'