[release/6.0] Update SPA templates submodule (#41641)

* Updated spa templates submodule.

* Update template-baselines.json

src/ProjectTemplates/test/template-baselines.json

@@ -1569,6 +1569,7 @@
         "ClientApp/src/custom.css",
         "ClientApp/src/App.js",
         "ClientApp/src/App.test.js",
+        "ClientApp/src/AppRoutes.js",
         "ClientApp/src/index.js",
         "ClientApp/src/reportWebVitals.js",
         "ClientApp/src/serviceWorkerRegistration.js",

spa-templates @ 74e05a19

-Subproject commit 08a4e743ccec97c24aec8b7a719655f08e827d8e
+Subproject commit 74e05a19dc83b736877cb2c5120456948d7799f1