Bump kotlin_version from 1.5.10 to 1.5.20 in /ScopedStorage

Bumps `kotlin_version` from 1.5.10 to 1.5.20.

Updates `kotlin-gradle-plugin` from 1.5.10 to 1.5.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.5.20/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.5.10...v1.5.20)

Updates `kotlin-stdlib` from 1.5.10 to 1.5.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.5.20/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.5.10...v1.5.20)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-gradle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-stdlib
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

ScopedStorage/build.gradle

@@ -16,7 +16,7 @@
 
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
-    ext.kotlin_version = "1.5.10"
+    ext.kotlin_version = "1.5.20"
     repositories {
         google()
         jcenter()