Add certificate details modal and fix SSL/TLS data processing

- Add certificate details modal to scan detail page with subject, issuer,
  validity dates, serial number, self-signed indicator, SANs, and TLS
  version support with expandable cipher suites
- Fix bug where certificate data was not being saved to database due to
  incorrect path lookup (was checking http_info['certificate'] instead of
  http_info['ssl_tls']['certificate'])
- Update requirements: add sslyze 6.0.0 and upgrade cryptography to >=42.0.0
  to fix 'No module named cryptography.x509.verification' error

app/web/services/scan_service.py

@@ -449,9 +449,10 @@ class ScanService:
 
                         # Process certificate and TLS info if present
                         http_info = service_data.get('http_info', {})
-                        if http_info.get('certificate'):
+                        ssl_tls = http_info.get('ssl_tls', {})
+                        if ssl_tls.get('certificate'):
                             self._process_certificate(
-                                http_info['certificate'],
+                                ssl_tls,
                                 scan_obj.id,
                                 service.id
                             )
@@ -489,16 +490,19 @@ class ScanService:
                 return service
         return None
 
-    def _process_certificate(self, cert_data: Dict[str, Any], scan_id: int,
+    def _process_certificate(self, ssl_tls_data: Dict[str, Any], scan_id: int,
                             service_id: int) -> None:
         """
         Process certificate and TLS version data.
 
         Args:
-            cert_data: Certificate data dictionary
+            ssl_tls_data: SSL/TLS data dictionary containing 'certificate' and 'tls_versions'
             scan_id: Scan ID
             service_id: Service ID
         """
+        # Extract certificate data from ssl_tls structure
+        cert_data = ssl_tls_data.get('certificate', {})
+
         # Create ScanCertificate record
         cert = ScanCertificate(
             scan_id=scan_id,
@@ -516,7 +520,7 @@ class ScanService:
         self.db.flush()
 
         # Process TLS versions
-        tls_versions = cert_data.get('tls_versions', {})
+        tls_versions = ssl_tls_data.get('tls_versions', {})
         for version, version_data in tls_versions.items():
             tls = ScanTLSVersion(
                 scan_id=scan_id,