Update plugin org.jetbrains.kotlin.jvm to v2.2.21 (#69)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle.properties

@@ -4,6 +4,6 @@ org.gradle.jvmargs=-Xmx2560m
 group=org.komapper
 version=0.0.1
 
-kotlinVersion=2.2.20
+kotlinVersion=2.2.21
 komapperVersion=5.6.0
 kspVersion=1.0.29