Log Message:
security/gpg-tui: update to 0.7.4

[0.7.4] - 2021-08-07
Added:
    Add config for splash screen to check SHA256 hash of assets

Changed:
    Bump rust-embed to 6.0.0
    Bump tui to 0.16.0
    Bump gpgme to 0.10.0
    Center the options menu title

Fixed:
    Mark the unsupported algorithms as unrecognized/unknown
    Fix the failing test about options menu title