fix getFullVersion for betas

Author: raftario

dist/index.js

@@ -121,7 +121,8 @@ async function getFullVersion(installPath: string) {
     "Pkg.Revision" in properties &&
     typeof properties["Pkg.Revision"] === "string"
   ) {
-    return properties["Pkg.Revision"]
+    const [fullVersion] = properties["Pkg.Revision"].split("-")
+    return fullVersion!
   } else {
     throw new Error("source.properties file is missing Pkg.Revision")
   }