Update rails, webpacker and other deps (#122)

* Update webpacker to 4.3.0
* Update Rails to 6.0.5
* Update webpack-dev-server to 3.11.0
* Update @rails packages to 6.0.5 in package.json

app/javascript/components/common/Switch.tsx

@@ -9,7 +9,7 @@ interface Props {
 
 const Switch = ({ label, onClick, checked, htmlId }: Props) => (
   <div className="checkboxSwitch">
-    <input type="checkbox" id={htmlId} onClick={onClick} checked={checked} />
+    <input type="checkbox" id={htmlId} onClick={onClick} checked={checked} onChange={() => null} />
     <label htmlFor={htmlId}>{label}</label>
   </div>
 );