changed versionString to Right(versionString)

Author: zmerr

modules/build/src/main/scala/scala/build/options/BuildOptions.scala

@@ -456,7 +456,7 @@ final case class BuildOptions(
           .result()
           .unsafeRun()(finalCache.ec)
       }
-      if (res.versions.available.contains(versionString)) versionString
+      if (res.versions.available.contains(versionString)) Right(versionString)
       else
         Left(
           new NoValidScalaVersionFoundError(res.versions.available, latestSupportedStableVersions)
@@ -479,7 +479,7 @@ final case class BuildOptions(
           .result()
           .unsafeRun()(finalCache.ec)
       }
-      if (res.versions.available.contains(versionString)) versionString
+      if (res.versions.available.contains(versionString)) Right(versionString)
       else
         Left(
           new NoValidScalaVersionFoundError(res.versions.available, latestSupportedStableVersions)