Bump stripeterminal from 2.6.0 to 2.9.0

Bumps [stripeterminal](https://github.com/stripe/stripe-terminal-android) from 2.6.0 to 2.9.0.
- [Release notes](https://github.com/stripe/stripe-terminal-android/releases)
- [Changelog](https://github.com/stripe/stripe-terminal-android/blob/master/CHANGELOG.md)
- [Commits](stripe/stripe-terminal-android@v2.6.0...v2.9.0)

---
updated-dependencies:
- dependency-name: com.stripe:stripeterminal
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

libs/cardreader/build.gradle

@@ -44,7 +44,7 @@ dependencies {
     androidTestImplementation "androidx.test.ext:junit:$jUnitExtVersion"
     androidTestImplementation "androidx.test.espresso:espresso-core:$espressoVersion"
 
-    implementation "com.stripe:stripeterminal:2.6.0"
+    implementation "com.stripe:stripeterminal:2.9.0"
 
     // Coroutines
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutinesVersion"