Bump com.google.devtools.ksp from 2.1.20-1.0.31 to 2.1.21-2.0.2

Bumps [com.google.devtools.ksp](https://github.com/google/ksp) from 2.1.20-1.0.31 to 2.1.21-2.0.2.
- [Release notes](https://github.com/google/ksp/releases)
- [Commits](https://github.com/google/ksp/compare/2.1.20-1.0.31...2.1.21-2.0.2)

---
updated-dependencies:
- dependency-name: com.google.devtools.ksp
  dependency-version: 2.1.21-2.0.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

app/build.gradle.kts

@@ -12,7 +12,7 @@ plugins {
     id("com.android.application")
     id("com.mikepenz.aboutlibraries.plugin")
     kotlin("android")
-    id("com.google.devtools.ksp") version "2.1.20-1.0.31"
+    id("com.google.devtools.ksp") version "2.1.21-2.0.2"
 }
 android {
     // functions to get git info: gitCommitHash, gitBranch, gitRemote