Neal H. Walfield authored Jan 12, 2024 and Neal H. Walfield committed Jan 25, 2024

  - When parsing a key ID string, reject short key IDs.

  - Note: we can't reject short key IDs in `KeyID::from_bytes`,
    because that function in infallible.  But, that function does return
    `KeyID::Invalid` when presented with a short key ID.

  - Fixes #388.