Update dependency org.jetbrains.kotlin:kotlin-gradle-plugin to v2.3.20

| datasource | package                                   | from   | to     |
| ---------- | ----------------------------------------- | ------ | ------ |
| maven      | org.jetbrains.kotlin:kotlin-gradle-plugin | 2.3.10 | 2.3.20 |

Author: renovate[bot]

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 hubdle = "0.18.1"
 hubdleCatalog = "0.13.0"
 javiersc-kotlin-compiler-extensions = "0.12.0+2.3.10"
-jetbrains-kotlin = "2.3.10"
+jetbrains-kotlin = "2.3.20"
 
 [libraries]
 hubdle-catalog = { module = "com.javiersc.hubdle:hubdle-version-catalog", version.ref = "hubdleCatalog" }