🧹 chore: upgrade Scala versions

Author: gaeljw

CHANGELOG.md

@@ -14,6 +14,7 @@ See also the [CHANGELOG](https://github.com/cucumber/cucumber-jvm/blob/master/CH
 ### Changed
 
 - [Core] Update `cucumber-core` dependency to [7.28.0](https://github.com/cucumber/cucumber-jvm/blob/main/CHANGELOG.md)
+- Upgrade Scala versions to 2.12.20
 
 ### Deprecated
 

build.sbt

@@ -31,7 +31,7 @@ ThisBuild / homepage := Some(
 
 // Scala versions
 
-val scala212 = "2.12.18"
+val scala212 = "2.12.20"
 val scala213 = "2.13.16"
 val scala3 = "3.3.1"