Lock kscript to kotlin 1.9.25

The 2.1.0 version of kotlin breaks kscript, which hasn't been updated
in over a year. Let's restrict kscript to working with kotlin 1.9.x
for now as kotlin 2 is a major breaking change.

kscript.hcl

@@ -1,5 +1,5 @@
 description = "Scripting extensions for kotlin (inclusions and dependencies)"
-requires = ["jre", "kotlin"]
+requires = ["jre", "kotlin-1.9.25"]
 source = "https://github.com/kscripting/kscript/releases/download/v${version}/kscript-${version}-bin.zip"
 binaries = ["bin/kscript"]
 strip = 1