build(deps): bump Azure.Identity, Azure.Security.KeyVault.Certificates, Azure.Security.KeyVault.Secrets and Microsoft.Identity.Web.GraphServiceClient in /src/GraphWebhooks

build(deps): bump Azure.Identity, Azure.Security.KeyVault.Certificates, Azure.Security.KeyVault.Secrets and Microsoft.Identity.Web.GraphServiceClient in /src/GraphWebhooks #278