Update EF Core, dependencies, and FK delete behavior

Upgraded project dependencies to latest versions, including Entity Framework Core, MailKit, AWS SDK, ZstdSharp.Port, and EasyExtensions packages. Changed foreign key delete behavior from Cascade to Restrict in both Postgres and Sqlite databases to prevent accidental data loss. Added new migrations to enforce these restrictions. Updated EasyExtensions.Crypto API usage in Module.cs. Refreshed test dependencies and removed license headers from model snapshots.

Author: bvdcode

src/Octockup.Server/Database/Module.cs

@@ -56,7 +56,7 @@ private Dictionary<string, string> LoadParams(IStreamCipher cipher)
             }
 
             var bytes = Convert.FromBase64String(EncryptedParameters);
-            var json = cipher.Decrypt(bytes);
+            var json = cipher.DecryptString(bytes);
             _paramsCache = JsonSerializer.Deserialize<Dictionary<string, string>>(json) ?? new(StringComparer.Ordinal);
             return _paramsCache;
         }
@@ -68,7 +68,7 @@ private void FlushParams(IStreamCipher cipher, Dictionary<string, string> dict)
                 .ToDictionary(x => x.Key, x => x.Value, StringComparer.Ordinal);
 
             var json = JsonSerializer.Serialize(normalized);
-            var bytes = cipher.Encrypt(json);
+            var bytes = cipher.EncryptString(json);
 
             EncryptedParameters = Convert.ToBase64String(bytes);
             _paramsCache = normalized;