use x509 loader in net9, skip diagnostics in net9

Author: webprofusion-chrisc

src/Certify.CLI/CertifyCLI.RunCertDiagnostics.cs

@@ -112,6 +112,7 @@ static bool isNumeric(string input)
                     }
                 }
 
+#if !NET9_0_OR_GREATER
                 if (!string.IsNullOrEmpty(site.CertificatePath) && System.IO.File.Exists(site.CertificatePath))
                 {
                     Console.WriteLine($"{site.Name}");
@@ -136,6 +137,7 @@ static bool isNumeric(string input)
                                         Console.WriteLine("\t Access: " + a.IdentityReference.Value.ToString());
                                     }
                                 }
+
                             }
 
                             if (includeOcspCheck)
@@ -212,7 +214,7 @@ static bool isNumeric(string input)
                         }
                     }
                 }
-
+#endif
                 Debug.WriteLine($"Item update took {itemTiming.Elapsed.TotalSeconds}s");
             }
 

src/Certify.Providers/ACME/Anvil/AnvilACMEProvider.cs

@@ -1594,7 +1594,11 @@ public async Task<ProcessStepResult> CompleteCertificateRequest(ILog log, Manage
 
                 certificateChain = await orderContext.Download(preferredChain);
 
+#if NET9_0_OR_GREATER
+                cert = X509CertificateLoader.LoadCertificate(certificateChain.Certificate.ToDer());
+#else
                 cert = new System.Security.Cryptography.X509Certificates.X509Certificate2(certificateChain.Certificate.ToDer());
+#endif
 
                 certExpiration = cert.NotAfter;
                 certFriendlyName += $"{cert.GetEffectiveDateString()} to {cert.GetExpirationDateString()}";