Bump sqlparse from 0.4.2 to 0.4.4 in /docs

Bumps [sqlparse](https://github.com/andialbrecht/sqlparse) from 0.4.2 to 0.4.4.
- [Release notes](https://github.com/andialbrecht/sqlparse/releases)
- [Changelog](https://github.com/andialbrecht/sqlparse/blob/master/CHANGELOG)
- [Commits](andialbrecht/sqlparse@0.4.2...0.4.4)

---
updated-dependencies:
- dependency-name: sqlparse
  dependency-type: direct:production
...

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