Using latest rascal release (#1052)

Author: DavyLandman

rascal-lsp/pom.xml

@@ -64,7 +64,7 @@
     <dependency>
       <groupId>org.rascalmpl</groupId>
       <artifactId>rascal</artifactId>
-      <version>0.42.2-RC3</version>
+      <version>0.42.2</version>
     </dependency>
     <!-- Rascal tests require JUnit 4 -->
     <dependency>