Explain where the JWT secret is stored when using default settings

The documentation uses the default `.AddJwtBearer()` method without any options. However, the JWTs generated are signed and the signature is validated somehow. Wouldn't this require the public key to be stored somewhere for the API to verify the given signature? Where is it stored?

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* ID: f76a2aaf-732a-f686-343b-d811faa43d44
* Version Independent ID: f76a2aaf-732a-f686-343b-d811faa43d44
* Content: [Generate tokens with dotnet user-jwts](https://learn.microsoft.com/en-us/aspnet/core/security/authentication/jwt-authn?view=aspnetcore-7.0&tabs=windows)
* Content Source: [aspnetcore/security/authentication/jwt-authn.md](https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/security/authentication/jwt-authn.md)
* Product: **aspnet-core**
* Technology: **aspnetcore-security**
* GitHub Login: @Rick-Anderson
* Microsoft Alias: **riande**