Consider on-disk state when computing dependencies

Fixes #28754.
Fixes #29846.
Fixes #30920.
Gnupg: Additional Mirror

Adds another mirror to Gnupg that doesn’t reject/hamper connections
to/from proxies/etc.

Closes #31847.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Gnupg2: Additional Mirror

Adds another mirror that doesn’t hamper or stall connections from/to
proxies/unusual connections/etc.

Closes #31848.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Libassuan: Mirror

Adds a mirror to the libassuan formula.

Closes #31849.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
libsodium: 0.7.0
gnupg: update 1.4.18 bottle.
gnupg2: update 2.0.26 bottle.
libassuan: update 2.1.2 bottle.
libsodium: update 0.7.0 bottle.