Bump androidx.activity:activity-ktx from 1.8.0 to 1.9.3

Bumps androidx.activity:activity-ktx from 1.8.0 to 1.9.3.

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

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

gradle/libs.versions.toml

@@ -3,7 +3,7 @@ agp = '8.5.1'
 android-billingclient = '5.0.0'
 android-desugar = '2.0.4'
 android-security-lint = '1.0.1'
-androidx-activity = '1.8.0'
+androidx-activity = '1.9.3'
 androidx-appcompat = '1.4.2'
 androidx-arch-core = '2.1.0'
 androidx-browser = '1.5.0'