Update actions in CI (#61)

Github is deprecating NodeJS 16 that is present in some of the
old actions we were using.

Moving to use @main

Add failure handling to MigratingCacheClient (#57)

* Add failure handling to MigratingCacheClient

## Motivation / Description
I forgot to add this file to the failure handling changes.

* bump version to 1.1.2

Use TypeVars for from_server* factory methods (#33)

## Motivation / Description
Using typevars allows child classes to work and get
the right type hinting.

♻️ refactor: remove Final from event so that new handlers can be adde…

…d or removed (#29)

🔖 chore(ver): bump to 0.9.1 (#28)