.NET 9 breaking changes

[damienbod]

See dotnet/docs#41662

// X509CertificateLoader.LoadPkcs12(cert.Export(X509ContentType.Pkcs12, null))
// var cert = X509CertificateLoader.LoadPkcs12FromFile(Path.Combine(environment.ContentRootPath, "sts_dev_cert.pfx"), "1234");

[damienbod]

To fix:

C:\repos\git\damienbod\AspNetCoreCertificates\src\CertificateManager\ImportExportCertificate.cs(21):var signingCertWithoutPrivateKey = new X509Certificate2(publicKeyBytes);
C:\repos\git\damienbod\AspNetCoreCertificates\src\CertificateManager\ImportExportCertificate.cs(168):var certificate = new X509Certificate2(certBytes);
C:\repos\git\damienbod\AspNetCoreCertificates\src\CertificateManager\ImportExportCertificate.cs(173):var certificate = new X509Certificate2(certBytes, password);
C:\repos\git\damienbod\AspNetCoreCertificates\src\CertificateManager\ImportExportCertificate.cs(201):var certCollection = new X509Certificate2Collection(certificate);
C:\repos\git\damienbod\AspNetCoreCertificates\src\CertificateManager\ImportExportCertificate.cs(218):var certificateCollection = new X509Certificate2Collection();
C:\repos\git\damienbod\AspNetCoreCertificates\src\CertificateManager\ImportExportCertificate.cs(223):var outcollection = new X509Certificate2Collection();
C:\repos\git\damienbod\AspNetCoreCertificates\src\CertificateManager\PemDecoder.cs(146):var certificateOut = new X509Certificate2(pkcs12bytes);
C:\repos\git\damienbod\AspNetCoreCertificates\src\CertificateManager\PemDecoder.cs(151):var certificateOut = new X509Certificate2(pkcs12bytes, password);