build(deps): bump androidx.core:core-ktx in /11_flow/android

Bumps androidx.core:core-ktx from 1.13.1 to 1.15.0.

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

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

11_flow/android/app/build.gradle

@@ -47,7 +47,7 @@ android {
 }
 
 dependencies {
-    def core_version = "1.13.1"
+    def core_version = "1.15.0"
     def appcompat_version = "1.7.0"
     def constraintlayout_version = "2.1.4"
     def swiperefreshlayout_version = "1.1.0"