adding patch workaround as per suggestion webpack/webpack-dev-server#…

…1491 (comment)

patches/react-scripts+2.1.1.patch

@@ -10,3 +10,30 @@ patch-package
    // These are the "entry points" to our application.
    // This means they will be the "root" imports that are included in JS bundle.
    entry: [
+
+--- a/node_modules/react-scripts/config/webpackDevServer.config.js
++++ b/node_modules/react-scripts/config/webpackDevServer.config.js
+@@ -18,6 +18,14 @@
+
+ const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
+ const host = process.env.HOST || '0.0.0.0';
++let httpsOptions = undefined;
++if (protocol === 'https') {
++    httpsOptions = {
++        spdy: {
++            protocols: ['http/1.1']
++        }
++    }
++}
+
+ module.exports = function(proxy, allowedHost) {
+   return {
+@@ -81,7 +89,7 @@
+       ignored: ignoredFiles(paths.appSrc),
+     },
+     // Enable HTTPS if the HTTPS environment variable is set to 'true'
+-    https: protocol === 'https',
++    https: httpsOptions,
+     host,
+     overlay: false,
+     historyApiFallback: {