Bump roomVersion from 2.2.5 to 2.4.2

Bumps `roomVersion` from 2.2.5 to 2.4.2.

Updates `room-runtime` from 2.2.5 to 2.4.2

Updates `room-rxjava2` from 2.2.5 to 2.4.2

Updates `room-compiler` from 2.2.5 to 2.4.2

Updates `room-ktx` from 2.2.5 to 2.4.2

---
updated-dependencies:
- dependency-name: androidx.room:room-runtime
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: androidx.room:room-rxjava2
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: androidx.room:room-compiler
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: androidx.room:room-ktx
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

app/build.gradle

@@ -165,7 +165,7 @@ ext {
     materialDialogsVersion = "3.3.0"
     parcelerVersion = "1.1.13"
     retrofit2Version = "2.9.0"
-    roomVersion = "2.2.5"
+    roomVersion = "2.4.2"
     workVersion = "2.7.1"
     markwonVersion = "4.6.2"
     espressoVersion = "3.4.0"