fix: internal server error when sending already existing push sub (#129) · MaSch0212/minigolf-friday@92934ec

The following actions uses Node.js version which is deprecated and will be forced to run on node20: actions/checkout@v3, actions/setup-node@v3, docker/login-action@v2. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. Auto-generated code requires an explicit '#nullable' directive in source.

src/server/host/Endpoints/Administration/Events/StartEventEndpoint.cs#L34

Parameter 'userPushSubscriptionMapper' is unread.

src/client/src/app/+state/action-state.ts#L72

'x' is defined but never used. Allowed unused vars must match /^_/u

src/client/src/app/+state/action-state.ts#L100