Secure File 1.0.2

Update to .NET 6.0, improve RNG usage, and bump version

Upgraded target framework from netcoreapp3.1 to net6.0 in the project file. Replaced deprecated RNGCryptoServiceProvider with RandomNumberGenerator.Create() in EncryptCommand. Simplified AES algorithm creation in SymmetricAlgorithmCommand and improved error handling. Updated AppVeyor config to version 1.0.2 and refreshed deployment token. Changed secure-file script permissions to executable.

Secure File 1.0.1

Correct path to build folder

Secure File 1.0.0

Package and upload artifact