Use moment-timezone-data-webpack-plugin to optimize timezones shipped…

… in wp/date

package.json

@@ -211,6 +211,7 @@
 		"metro-react-native-babel-transformer": "0.70.3",
 		"mkdirp": "0.5.1",
 		"mock-match-media": "0.4.2",
+		"moment-timezone-data-webpack-plugin": "1.5.1",
 		"nock": "12.0.3",
 		"node-fetch": "2.6.1",
 		"node-watch": "0.7.0",

tools/webpack/packages.js

@@ -2,6 +2,7 @@
  * External dependencies
  */
 const CopyWebpackPlugin = require( 'copy-webpack-plugin' );
+const MomentTimezoneDataPlugin = require( 'moment-timezone-data-webpack-plugin' );
 const { join } = require( 'path' );
 
 /**
@@ -156,5 +157,9 @@ module.exports = {
 				.concat( bundledPackagesPhpConfig )
 				.concat( vendorsCopyConfig ),
 		} ),
+		new MomentTimezoneDataPlugin( {
+			startYear: 2000,
+			endYear: 2030,
+		} ),
 	].filter( Boolean ),
 };