Bump kotlin.version from 2.3.10 to 2.3.20 (#1781)

Author: dependabot[bot]

pom.xml

@@ -58,7 +58,7 @@
         <!-- Run tests in Turkish to make sure that they don't depend on
                          locale. Turkish is a notoriously tricky locale. -->
         <surefire.argline>@{argLine} -Duser.language=TR -Duser.country=tr</surefire.argline>
-        <kotlin.version>2.3.10</kotlin.version>
+        <kotlin.version>2.3.20</kotlin.version>
     </properties>
     <licenses>
         <license>