update electron packages for vulnerabilities

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

package.json

@@ -138,7 +138,7 @@
     "electron-updater": "^4.1.2",
     "electron-window-state": "^5.0.3",
     "filenamify": "^4.1.0",
-    "handlebars": "4.1.2",
+    "handlebars": "^4.1.2",
     "http-proxy": "^1.17.0",
     "https-proxy-agent": "^3.0.1",
     "jsonwebtoken": "^8.5.1",