Bump sqlx from 0.6.3 to 0.7.0 in /deepwell

Bumps [sqlx](https://github.com/launchbadge/sqlx) from 0.6.3 to 0.7.0.
- [Changelog](https://github.com/launchbadge/sqlx/blob/main/CHANGELOG.md)
- [Commits](launchbadge/sqlx@v0.6.3...v0.7.0)

---
updated-dependencies:
- dependency-name: sqlx
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>