Missing support for --assert-pubkey-algo in gpgv makes apt unhappy

When using gpgv-sq as gpgv, apt (emits warnings due to errors from gpgv not parsing those options. With apt 2.9.1, where using these options got added in apt 2.7.13, when doing apt update one gets something like:

W: https://<repo-url>/InRelease: Unknown response from gpgv to --assert-pubkey-algo check: gpgv:   error: Error parsing command-line arguments

For each configured repository.