Bump Microsoft.AspNetCore.Authentication.JwtBearer from 8.0.19 to 8.0.21#194

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dependabot/nuget/src/LtiAdvantage.AspNetCore/Microsoft.AspNetCore.Authentication.JwtBearer-8.0.21LtiLibrary/LtiAdvantage:dependabot/nuget/src/LtiAdvantage.AspNetCore/Microsoft.AspNetCore.Authentication.JwtBearer-8.0.21Copy head branch name to clipboard