fix: ci: use filecoin-ffi hash to cache make deps outputs

[galargh]

Related Issues

#11897

Proposed Changes

Use filecoin-ffi head commit hash as a cache key for make deps outputs cache.

Additional Info

Previously, we were only taking into account install-filcrypto script and rustc-target-features-optimized.json, but we also have to account for changes in the rust directory. At this point, it's easier to use the hash of the entire repo into consideration.

Checklist

Before you mark the PR ready for review, please make sure that:

• Commits have a clear commit message.
• PR title is in the form of of <PR type>: <area>: <change being made>
  • example: fix: mempool: Introduce a cache for valid signatures
  • PR type: fix, feat, build, chore, ci, docs, perf, refactor, revert, style, test
  • area, e.g. api, chain, state, market, mempool, multisig, networking, paych, proving, sealing, wallet, deps
• If the PR affects users (e.g., new feature, bug fix, system requirements change), update the CHANGELOG.md and add details to the UNRELEASED section.
• New features have usage guidelines and / or documentation updates in
  • Lotus Documentation
  • Discussion Tutorials
• Tests exist for new functionality or change in behavior
• CI is green