Update ASF "stash" action to allow list of keys

[potiuk]

In the new "caching" mechanism we are using "stash" GitHub action from @assignUser which only allows one key per action.

The action is in https://github.com/apache/infrastructure-actions/tree/main/stash

This is a a limiting factor when we want to download artifacts with a dynamic list of keys coming from a variable (say list of keys derived python versions - "3.9 3.10 3.11 3.12" -> "key-3.9 key-3.10 key-3.11 key-3.12".

Currently in #45266 (https://gtithub.com/apache/airflow/pull/45266/files#diff-a2dbc854d7d9f769ffe6efe98247baa68750cba87d785fb70d4616331010c7d0) we are hard-coding the possible actions to run with parameters and we are skipping those that are not on the list, but this is more of a hack than target solution.

Ideally we should be able to pass keys parameter to the action instead of key and be able to produce "hit-keys" list as output - then we could generate and pass the list of keys as input.

[assignUser]

So you would want the action to be able to download multiple 'stash' artifacts and unpack them into a single dir? I can see how this would be useful to simplify this: https://github.com/apache/airflow/pull/45266/files#diff-a2dbc854d7d9f769ffe6efe98247baa68750cba87d785fb70d4616331010c7d0R43

The main motivation for the action was caching compiler caches for which this doesn't really make sense but when used as a more general actions/cache replacement this makes sense.

[potiuk]

Yeah. That's the main motivation - to avoid hard-coding of the conditional cache retrieval :) .. We might have either me or someone from our team to contribute that.