Update ksp to v1.7.21-1.0.8 (#1412)

diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index f102d49..3c5920f 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -15,7 +15,7 @@
 [versions]
 kotlin = "1.7.21"
 kct = "1.4.9"
-ksp = "1.7.20-1.0.8"
+ksp = "1.7.21-1.0.8"
 ktlint = "0.46.1"
 
 [plugins]