Towards Avatica 1.24.0 and Avatica-Go 5.3.0

[Francis Chuang]

Hey everyone,

Since Calcite 1.36.0 has been released, I think it would be a good time 
to release Avatica 1.24.0 and Avatica-Go 5.3.0.

I will be release manager for both releases, with Avatica being released 
first, followed by Avatica-Go.

For Avatica, can community members please review and merge the open pull 
requests? There are quite a few that look like they are ready and a few 
that can be merged with some work.

I am looking at making rc0 available for voting in around 2 weeks, to 
allow for time to merge any open PRs, but I am happy to extend that if 
needed.

Francis