chore(deps): bump org.jetbrains.kotlin:kotlin-maven-allopen

Bumps org.jetbrains.kotlin:kotlin-maven-allopen from 2.1.10 to 2.1.20.

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-maven-allopen
  dependency-version: 2.1.20
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

boot-kotlin-co/pom.xml

@@ -23,7 +23,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>21</java.version>
-        <kotlin.version>2.1.10</kotlin.version>
+        <kotlin.version>2.1.20</kotlin.version>
         <kotest.version>5.9.1</kotest.version>
         <mockk.version>1.13.16</mockk.version>
         <springmockk.version>4.0.2</springmockk.version>