Bump com.google.devtools.ksp from 2.0.20-1.0.25 to 2.0.21-1.0.25

Bumps [com.google.devtools.ksp](https://github.com/google/ksp) from 2.0.20-1.0.25 to 2.0.21-1.0.25.
- [Release notes](https://github.com/google/ksp/releases)
- [Commits](google/ksp@2.0.20-1.0.25...2.0.21-1.0.25)

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

Signed-off-by: dependabot[bot] <[email protected]>

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 kotlin = "2.0.20"
 kotlinx-serialization = "1.7.3"
-ksp = "2.0.20-1.0.25"
+ksp = "2.0.21-1.0.25"
 ktfmt = "0.49"
 jvmTarget = "17"
 moshix = "0.28.0"