Bump Stripe.net from 50.4.1 to 52.3.0 - #41

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-dotnet@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Possible null reference argument for parameter 'source' in 'IEnumerable<GoalOccurrenceResponse> Enumerable.Where<GoalOccurrenceResponse>(IEnumerable<GoalOccurrenceResponse> source, Func<GoalOccurrenceResponse, bool> predicate)'.

Possible null reference argument for parameter 'source' in 'int Enumerable.Count<GoalOccurrenceResponse>(IEnumerable<GoalOccurrenceResponse> source, Func<GoalOccurrenceResponse, bool> predicate)'.

'RelationalEntityTypeBuilderExtensions.HasCheckConstraint<TEntity>(EntityTypeBuilder<TEntity>, string, string?)' is obsolete: 'Configure this using ToTable(t => t.HasCheckConstraint()) instead.'

'RelationalEntityTypeBuilderExtensions.HasCheckConstraint<TEntity>(EntityTypeBuilder<TEntity>, string, string?)' is obsolete: 'Configure this using ToTable(t => t.HasCheckConstraint()) instead.'

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Dereference of a possibly null reference.