Update systemRequirements.md

Author: nixel2007

docs/en/systemRequirements.md

@@ -6,7 +6,7 @@ Using `BSL Language Server` has some limitations, listed bellow
 
 `BSL Language Server` is a console Java application and requires the presence of a Java virtual machine on the computer.
 
-The minimum supported version is Java 17, but as part of the build pipelines, a health check is performed when using more recent versions. Java versions 17 and 19 are currently supported.
+The minimum supported version is Java 17, but as part of the build pipelines, a health check is performed when using more recent versions. Java versions 17 and 20 are currently supported.
 
 JDK vendor is also interesting. Due to the changed licensing policy of Oracle, it is recommended to use open implementations of the `OpenJDK` virtual machine: AdoptOpenJDK, Liberica JDK.