Bump sqlparse from 0.4.2 to 0.4.4 in /backend

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](https://github.com/andialbrecht/sqlparse/compare/0.4.2...0.4.4)

---
updated-dependencies:
- dependency-name: sqlparse
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

backend/poetry.lock

@@ -2577,16 +2577,21 @@ sqlcipher = ["sqlcipher3-binary"]
 
 [[package]]
 name = "sqlparse"
-version = "0.4.2"
+version = "0.4.4"
 description = "A non-validating SQL parser."
 category = "main"
 optional = false
 python-versions = ">=3.5"
 files = [
-    {file = "sqlparse-0.4.2-py3-none-any.whl", hash = "sha256:48719e356bb8b42991bdbb1e8b83223757b93789c00910a616a071910ca4a64d"},
-    {file = "sqlparse-0.4.2.tar.gz", hash = "sha256:0c00730c74263a94e5a9919ade150dfc3b19c574389985446148402998287dae"},
+    {file = "sqlparse-0.4.4-py3-none-any.whl", hash = "sha256:5430a4fe2ac7d0f93e66f1efc6e1338a41884b7ddf2a350cedd20ccc4d9d28f3"},
+    {file = "sqlparse-0.4.4.tar.gz", hash = "sha256:d446183e84b8349fa3061f0fe7f06ca94ba65b426946ffebe6e3e8295332420c"},
 ]
 
+[package.extras]
+dev = ["build", "flake8"]
+doc = ["sphinx"]
+test = ["pytest", "pytest-cov"]
+
 [[package]]
 name = "taskipy"
 version = "1.10.1"