Github Actions slow

From: Sam Darwin (samuel.d.darwin_at_[hidden])
Date: 2022-10-12 14:57:16

On https://github.com/boostorg/json we have noticed very slow Github
Actions times such as "Total duration: 6h 8m 47s"

This is very likely caused by Github throttling jobs.
https://docs.github.com/en/actions/learn-github-actions/usage-limits-billing-and-administration
mentions limits of between 20 and 180 which would apply to the entire
boostorg account.  A reminder to any boost developers who are seeing slow
processing time that they may use Drone CI, instructions at
https://github.com/boostorg/boost-ci