Update dependency flake8-import-order to v0.19.0

Author: renovate[bot]

requirements.txt

@@ -4,7 +4,7 @@ flake8-commas==2.1.0
 flake8-comprehensions==3.10.0
 flake8-debugger==4.1.2
 flake8-docstrings==1.7.0
-flake8-import-order==0.18.2
+flake8-import-order==0.19.0
 flake8-print==5.0.0
 flake8-string-format==0.3.0
 mock==5.1.0