Bump androidx.fragment:fragment-ktx from 1.6.2 to 1.8.4

Bumps androidx.fragment:fragment-ktx from 1.6.2 to 1.8.4.

---
updated-dependencies:
- dependency-name: androidx.fragment:fragment-ktx
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

app/build.gradle

@@ -31,7 +31,7 @@ dependencies {
     implementation rootProject.ext.appcompat
     implementation "androidx.preference:preference-ktx:1.2.1"
     implementation "com.google.android.material:material:1.9.0"
-    implementation "androidx.fragment:fragment-ktx:1.6.2"
+    implementation "androidx.fragment:fragment-ktx:1.8.4"
     implementation rootProject.ext.core
     implementation rootProject.ext.constraintLayout
     implementation rootProject.ext.dagger