Bump Swing version for 2.0.0 release (#5678)

Author: benhutchison

versions.properties

@@ -17,8 +17,8 @@ scala.binary.version=2.12
 # external modules shipped with distribution, as specified by scala-library-all's pom
 scala-xml.version.number=1.0.6
 scala-parser-combinators.version.number=1.0.5
-scala-swing.version.number=2.0.0-M2
-scala-swing.version.osgi=2.0.0.M2
+scala-swing.version.number=2.0.0
+scala-swing.version.osgi=2.0.0
 jline.version=2.14.3
 # this one is shaded and embedded in scala-compiler.jar
 scala-asm.version=5.1.0-scala-1