Bump Microsoft.Extensions.Configuration.AzureKeyVault from 3.1.8 to 3.1.15#66

dependabot-preview[bot] wants to merge 1 commit intomasterjmhardison/Example-AzureKeyVaultHSM-XMLSigning:masterfrom

dependabot/nuget/Microsoft.Extensions.Configuration.AzureKeyVault-3.1.15jmhardison/Example-AzureKeyVaultHSM-XMLSigning:dependabot/nuget/Microsoft.Extensions.Configuration.AzureKeyVault-3.1.15Copy head branch name to clipboard