Update dependency com.google.devtools.ksp to v2

Author: renovate[bot]

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 junitVersion = "5.11.0"
 detektVersion = "1.23.6"
-kspVersion = "1.9.23-1.0.20"
+kspVersion = "2.1.21-2.0.1"
 ktlintVersion = "12.1.1"
 
 [libraries]