Bump web TS version (microsoft#223552)

Author: mjbvz

extensions/typescript-language-features/src/extension.browser.ts

@@ -61,7 +61,7 @@ export async function activate(context: vscode.ExtensionContext): Promise<Api> {
 		new TypeScriptVersion(
 			TypeScriptVersionSource.Bundled,
 			vscode.Uri.joinPath(context.extensionUri, 'dist/browser/typescript/tsserver.web.js').toString(),
-			API.fromSimpleString('5.5.2')));
+			API.fromSimpleString('5.5.4')));
 
 	let experimentTelemetryReporter: IExperimentationTelemetryReporter | undefined;
 	const packageInfo = getPackageInfo(context);