libassuan 2.1.2
libassuan: update 2.1.2 bottle.

Closes #31792.
Libgcrypt 1.6.2

Version bump for Libgcrypt from 1.6.1 to 1.6.2. Adds a mirror as well.
libgcrypt: update 1.6.2 bottle.

Closes #31781.

Signed-off-by: Brett Koonce <koonce@gmail.com>
upgrade to doxygen 1.8.8
doxygen: update 1.8.8 bottle.