fix(deps): update kotlin & ksp to v2.3.21

Author: renovate[bot]

gradle/libs.versions.toml

@@ -10,7 +10,7 @@ composeConstraintLayout = "1.1.1"
 glm = "0.9.9.1-11"
 gradleVersions = "0.54.0"
 haze = "1.7.2"
-kotlin = "2.3.20"
+kotlin = "2.3.21"
 material-icons = "1.7.8"
 material3 = "1.5.0-alpha17"