Update lance benchmark dependencies (major) (#8525)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [lance](https://crates.io/crates/lance) | dependencies | major | `6` →
`7` |
| [lance-encoding](https://crates.io/crates/lance-encoding) |
dependencies | major | `6` → `7` |

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Signed-off-by: Robert Kruszewski <github@robertk.io>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Robert Kruszewski <github@robertk.io>

Author: renovate[bot]