Bump sqlparse from 0.4.2 to 0.4.4

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] <support@github.com>

requirements.txt

@@ -99,7 +99,7 @@ sphinxcontrib-htmlhelp==2.0.0
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.5
-sqlparse==0.4.2
+sqlparse==0.4.4
 stack-data==0.2.0
 stevedore==3.5.0
 texttable==1.6.4