Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, rwjblue/setup-volta@v1, H1D/actions-ember-testing@8ca8da615c2db5889b7fbd3834e4093706754435. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The following actions uses node12 which is deprecated and will be forced to run on node16: rwjblue/setup-volta@v1, H1D/actions-ember-testing@8ca8da615c2db5889b7fbd3834e4093706754435. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

Forbidden non-null assertion