Bump build_npm_package machine to more powerful ones (#44831)

Summary:
Pull Request resolved: #44831

The build_npm_package jobs remains sometimes in queue because there are not enough executors for it to run.
This makes our signals less reliable.

Plus, it is rebuilding part of Android, so it can benefit from a bigger machine

## Changelog:
[Internal] - Bump build_npm_package machine to more powerful ones

Reviewed By: cortinico

Differential Revision: D58284884

fbshipit-source-id: a29b7db843633ff3cfd9373cf4dbe55b24c939b1

Author: cipolleschi

.github/workflows/test-all.yml

@@ -640,7 +640,7 @@ jobs:
           name: rntester-apk
           path: packages/rn-tester/android/app/build/outputs/apk/
   build_npm_package:
-    runs-on: 4-core-ubuntu-latest
+    runs-on: 8-core-ubuntu
     needs: [set_release_type, prepare_hermes_workspace, build_hermes_macos, build_hermesc_linux, build_hermesc_windows,build_android]
     container:
       image: reactnativecommunity/react-native-android:latest