No need for build in preversion; build is only in npm package

Author: STRML

package.json

@@ -12,7 +12,7 @@
     "prepublish": "npm run build",
     "validate": "npm ls",
     "preversion": "npm run lint",
-    "version": "npm run build && git add CHANGELOG.md",
+    "version": "git add CHANGELOG.md",
     "postversion": "git push && git push --tags"
   },
   "repository": {