Bump Microsoft.Authentication.WebAssembly.Msal from 8.0.14 to 8.0.15 in /GraphSample#220

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dependabot/nuget/GraphSample/Microsoft.Authentication.WebAssembly.Msal-8.0.15microsoftgraph/msgraph-sample-blazor-clientside:dependabot/nuget/GraphSample/Microsoft.Authentication.WebAssembly.Msal-8.0.15Copy head branch name to clipboard