chore: Bump zcash_primitives, orchard and zcash_proofs

[upbqdn]

Solution

• Bump orchard from 0.7 to 0.8.
• Bump zcash_primitives from 0.14 to 0.15
  • The new version moves the methods previously in zcash_primitives::consensus::Parameters to zcash_protocol::consensus::NetworkConstants, which is now blanket-implemented for Zebra's Network, so I removed our implementation of zcash_primitives::consensus::Parameters because of conflicting method names. The blanket implementation of NetworkConstants returns hard-coded HRPs, so we lost the ability to return custom ones. We don't need custom HRPs now, so I removed them.
• Bump zcash_proofs from 0.14 to 0.15.

Tests

Existing tests should suffice.

PR Author's Checklist

• The PR name will make sense to users.
• The PR provides a CHANGELOG summary.
• The solution is tested.
• The documentation is up to date.
• The PR has a priority label.

PR Reviewer's Checklist

• The PR Author's checklist is complete.
• The PR resolves the issue.

[arya2]

This looks good!

[upbqdn]

@Mergifyio refresh

[mergify]

refresh

✅ Pull request refreshed