Allow partial cache keys for poetry environments

[krishanbhasin-gc]

Description:
Allows the action to use partial-key matching as a fallback when the cache misses.

This will save much compute time for dependency upgrade scenarios.

Related issue:
#627

Check list:

• Mark if documentation changes are required.
• Mark if tests were added or updated to cover the changes.

[dusan-trickovic]

Hello @krishanbhasin-gc ! I apologize for the late response. Unfortunately, our team has decided not to proceed with the original issue #627 and, therefore, this PR. The reason for this decision (as well as for closing the issue in the first place) mostly stems from the fact that this could cause the snowballing effect with dependencies - as the package manager can't handle the removal of stale ones. In other words, it would install new package versions, but would also keep the old ones.

With this in place, the cache size would continue to grow and grow until it, essentially, lost its original purpose and efficiency. So, at least right now, we don't think there's much of anything we can do regarding this.

In any case, however, we appreciate your input and thank you very much for your time and contribution!