Bump sqlparse from 0.5.2 to 0.5.3 (#535)

Bumps [sqlparse](https://github.com/andialbrecht/sqlparse) from 0.5.2 to 0.5.3.
- [Release notes](https://github.com/andialbrecht/sqlparse/releases)
- [Changelog](https://github.com/andialbrecht/sqlparse/blob/master/CHANGELOG)
- [Commits](andialbrecht/sqlparse@0.5.2...0.5.3)

---
updated-dependencies:
- dependency-name: sqlparse
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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