Bump ecto from 3.9.1 to 3.9.2

[dependabot[bot]]

Bumps ecto from 3.9.1 to 3.9.2.

Changelog

Sourced from ecto's changelog.

v3.9.2 (2022-11-18)

Enhancements

• [Ecto.Query] Allow selected_as inside CTE
• [Ecto.Query] Allow selected_as to be used in subquery

Bug fixes

• [Ecto.Repo] Fix preloading through associations on nil
• [Ecto.Query] Fix select merging a selected_as field into a source

Commits

• 255a9a0 Release v3.9.2
• ec4ca69 Revert "Make unsafe validate unique exclude primary key only for loaded schem...
• 6c87f7f Update CHANGELOG
• a3832c1 Mention schemas are queryable, closes #4049
• db20d01 Update docs to use Config instead of Mix.Config (#4047)
• 4a57ec6 Fix typo (#4046)
• e150ac9 Clarify :returning option for inserts (#4007)
• 6215dcf Fix a function arity in docs (#4044)
• 3cd057c Allow selected_as inside CTE (#4043)
• 3b95538 docs(Ecto.Repo): Inform that measurements may, but don't have to, be present ...
• Additional commits viewable in compare view

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[dependabot[bot]]

Looks like ecto is up-to-date now, so this is no longer needed.