Bump com.android.billingclient:billing-ktx from 7.0.0 to 7.1.0

Bumps com.android.billingclient:billing-ktx from 7.0.0 to 7.1.0.

---
updated-dependencies:
- dependency-name: com.android.billingclient:billing-ktx
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

flow/build.gradle.kts

@@ -113,7 +113,7 @@ dependencies {
 
     api("androidx.startup:startup-runtime:1.1.1")
 
-    val billingVersion = "7.0.0"
+    val billingVersion = "7.1.0"
     api("com.android.billingclient:billing-ktx:$billingVersion")
 
     implementation("androidx.annotation:annotation:1.8.0")