Switch ember serve(r) -> npm start

---

Commit:  ember-learn/super-rentals-tutorial@67a50e7
Script:  https://github.com/ember-learn/super-rentals-tutorial/blob/67a50e76b57735f2018ecc8a3408a3519c60d791/.github/workflows/build.yml
Logs:    https://github.com/ember-learn/super-rentals-tutorial/commit/67a50e76b57735f2018ecc8a3408a3519c60d791/checks

yarn.lock

@@ -4043,9 +4043,9 @@ [email protected]:
   integrity sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow==
 
 electron-to-chromium@^1.4.601:
-  version "1.4.622"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.4.622.tgz#925d8b2264abbcbe264a9a6290d97b9e5a1af205"
-  integrity sha512-GZ47DEy0Gm2Z8RVG092CkFvX7SdotG57c4YZOe8W8qD4rOmk3plgeNmiLVRHP/Liqj1wRiY3uUUod9vb9hnxZA==
+  version "1.4.623"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.4.623.tgz#0f7400114ac3425500e9244d2b0e9c3107c331cb"
+  integrity sha512-lKoz10iCYlP1WtRYdh5MvocQPWVRoI7ysp6qf18bmeBgR8abE6+I2CsfyNKztRDZvhdWc+krKT6wS7Neg8sw3A==
 
 ember-auto-import@^2.6.0, ember-auto-import@^2.6.3, ember-auto-import@^2.7.0:
   version "2.7.2"