Bump stem-plugin from 2.0.0 to 2.1.1

Bumps [stem-plugin](https://github.com/LikeTheSalad/android-stem) from 2.0.0 to 2.1.1.
- [Release notes](https://github.com/LikeTheSalad/android-stem/releases)
- [Changelog](https://github.com/LikeTheSalad/android-stem/blob/master/CHANGELOG.md)
- [Commits](https://github.com/LikeTheSalad/android-stem/compare/2.0.0...2.1.1)

---
updated-dependencies:
- dependency-name: com.likethesalad.android:stem-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -27,7 +27,7 @@ buildscript {
         classpath 'com.google.gms:google-services:4.3.10'
         classpath 'org.sonarsource.scanner.gradle:sonarqube-gradle-plugin:3.3'
         classpath 'com.google.android.gms:oss-licenses-plugin:0.10.5'
-        classpath "com.likethesalad.android:stem-plugin:2.0.0"
+        classpath "com.likethesalad.android:stem-plugin:2.1.1"
         classpath 'org.owasp:dependency-check-gradle:7.1.0.1'
         classpath "org.jetbrains.dokka:dokka-gradle-plugin:1.6.21"
         classpath "org.jetbrains.kotlinx:kotlinx-knit:0.4.0"