Fix: include inputs.caching-key in restore keys for proper cache restoration

[giovaborgogno]

This PR fixes an issue in action.yml where inputs.caching-key was missing from the cache restore-keys.
Without it, cache restoration could fail to match the primary cache key, leading to unnecessary rebuilds.

The change adds inputs.caching-key to the restore-keys to ensure consistency with the main cache key and improve cache reuse across runs.

Summary by Sourcery

Fix cache restore-keys in action.yml to include inputs.caching-key for consistent cache matching and reuse

Bug Fixes:

• Include inputs.caching-key in restore-keys to ensure proper cache restoration

CI:

• Add inputs.caching-key to secondary cache restore keys in action.yml

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Add the missing inputs.caching-key prefix to the cache restore-keys in action.yml so they align with the primary cache key and improve cache hit reliability.

File-Level Changes

Change	Details	Files
Include inputs.caching-key in cache restore-keys	Add inputs.caching-key prefix to the restore-key line with Python version Add inputs.caching-key prefix to the shorter restore-key line	action.yml

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[sourcery-ai]

Hey there - I've reviewed your changes - here's some feedback:

• Consider retaining a generic restore-key fallback without the caching-key prefix so you can still hit caches if the user changes the caching-key input.
• Validate or sanitize the inputs.caching-key value in the action schema to prevent invalid characters or empty segments in cache keys.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Consider retaining a generic restore-key fallback without the caching-key prefix so you can still hit caches if the user changes the caching-key input.
- Validate or sanitize the inputs.caching-key value in the action schema to prevent invalid characters or empty segments in cache keys.

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[CLAassistant]

All committers have signed the CLA.

[kayhayen]

Good job, I rebased it and will merge it now.