Supress security warnings for test keys (#23704)

Author: javiercn

.config/CredScanSuppressions.json

@@ -24,6 +24,34 @@
     {
       "file": "\\src\\Servers\\Kestrel\\shared\\test\\TestCertificates\\testCert.pfx",
       "_justification": "Legitimate UT certificate file with private key"
+    },
+    {
+      "file": "\\src\\Servers\\Kestrel\\shared\\test\\TestCertificates\\https-aspnet.key",
+      "_justification": "Legitimate key file used for testing"
+    },
+    {
+      "file": "\\src\\Servers\\Kestrel\\shared\\test\\TestCertificates\\https-dsa-protected.key",
+      "_justification": "Legitimate key file used for testing"
+    },
+    {
+      "file": "\\src\\Servers\\Kestrel\\shared\\test\\TestCertificates\\https-dsa.key",
+      "_justification": "Legitimate key file used for testing"
+    },
+    {
+      "file": "\\src\\Servers\\Kestrel\\shared\\test\\TestCertificates\\https-ecdsa-protected.key",
+      "_justification": "Legitimate key file used for testing"
+    },
+    {
+      "file": "\\src\\Servers\\Kestrel\\shared\\test\\TestCertificates\\https-ecdsa.key",
+      "_justification": "Legitimate key file used for testing"
+    },
+    {
+      "file": "\\src\\Servers\\Kestrel\\shared\\test\\TestCertificates\\https-rsa-protected.key",
+      "_justification": "Legitimate key file used for testing"
+    },
+    {
+      "file": "\\src\\Servers\\Kestrel\\shared\\test\\TestCertificates\\https-rsa.key",
+      "_justification": "Legitimate key file used for testing"
     }
   ]
 }