chore(deps): bump actions/checkout from 4 to 6 - #86

Nullable value type may be null.

Dereference of a possibly null reference.

Cannot convert null literal to non-nullable reference type.

The variable 'ex' is declared but never used

'Rfc2898DeriveBytes.Rfc2898DeriveBytes(string, byte[], int, HashAlgorithmName)' is obsolete: 'The constructors on Rfc2898DeriveBytes are obsolete. Use the static Pbkdf2 method instead.' (https://aka.ms/dotnet-warnings/SYSLIB0060)

Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call.

Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call.

The variable 'e' is declared but never used

The variable 'e' is declared but never used