Update datafusion requirement from 47 to 51

[dependabot[bot]]

Updates the requirements on datafusion to permit the latest version.

Commits

• fd35a09 [branch-51] Update changelog for 51.0.0 RC2 (#18705)
• 187c6b2 [branch-51] bugfix: select_columns should validate column names (#18624)
• 6dcde50 [branch-51]: Add timezone to date_trunc fast path (#18596) (#18629)
• 5c743d7 [branch-51] bugfix: correct regression on TableType in into_view in DF51 (#18...
• 49e347b [branch-51] Update Changelog (#18592)
• 2677c27 [branch-51] Revert rewrite for coalesce, nvl and nvl2 simplification (#18...
• ff96b3b [branch-51] Update version to 51.0.0, add Changelog (#18551)
• c826009 Refactor log() signature to use coercion API + fixes (#18519)
• 2233796 minor: Remove inconsistent comment (#18539)
• fe24690 Add comments to Cargo.toml about workspace overrides (#18526)
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)