Bump kotlin-stdlib-jdk7 from 1.4.32 to 1.7.21

Bumps [kotlin-stdlib-jdk7](https://github.com/JetBrains/kotlin) from 1.4.32 to 1.7.21.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.4.32...v1.7.21)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-stdlib-jdk7
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

android/tutorial/build.gradle

@@ -39,7 +39,7 @@ android {
 }
 
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.4.32"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.21"
     implementation "androidx.appcompat:appcompat:1.3.1"
     implementation "androidx.core:core-ktx:1.5.0"