fix(csp): update ol and fix webpack type (#2138)

Author: dagda1

packages/netlify-cms-proxy-server/webpack.config.js

@@ -10,7 +10,7 @@ module.exports = {
   entry: { index: path.join('src', 'index.ts'), middlewares: path.join('src', 'middlewares.ts') },
   mode: NODE_ENV,
   target: 'node',
-  devtool: 'source-map',
+  devtool: 'cheap-module-source-map',
   output: {
     path: path.resolve(__dirname, 'dist'),
     filename: '[name].js',

packages/netlify-cms-widget-map/package.json

@@ -30,6 +30,6 @@
     "react-immutable-proptypes": "^2.1.0"
   },
   "dependencies": {
-    "ol": "^5.3.1"
+    "ol": "^6.9.0"
   }
 }