[INTERNAL] package.json: Move postversion git push to prepublishOnly

Author: flovogt

package.json

@@ -38,7 +38,7 @@
 		"jsdoc-watch": "npm run jsdoc && chokidar \"./lib/**/*.js\" -c \"npm run jsdoc-generate\"",
 		"preversion": "npm test",
 		"version": "git-chglog --next-tag v$npm_package_version -o CHANGELOG.md && git add CHANGELOG.md",
-		"postversion": "git push --follow-tags",
+		"prepublishOnly": "git push --follow-tags",
 		"release-note": "git-chglog -c .chglog/release-config.yml v$npm_package_version",
 		"depcheck": "depcheck --ignores docdash,compression,cors"
 	},