added release credentials

Author: MihaiSurdeanu

release.sbt

@@ -1,5 +1,12 @@
 import ReleaseTransformations._
 
+ThisBuild / credentials ++= {
+  val file = Path.userHome / ".sbt" / ".clulab-credentials"
+
+  if (file.exists) Seq(Credentials(file))
+  else Seq.empty
+}
+
 releaseProcess := Seq[ReleaseStep](
   checkSnapshotDependencies,
   inquireVersions,