[Fixes #12458] black fails on python3.10 constructs (#12461)

Author: mattiagiupponi

.github/workflows/flake8.yml

@@ -37,4 +37,4 @@ jobs:
         flake8 geonode --count --statistics
 
     - name: "Check: black"
-      run: black -t py310 --check geonode
+      run: black --check geonode

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.black]
 line-length = 120
-target-version = ['py37']
+target-version = ['py310', 'py311']
 exclude = '''
 /(
     geonode/.*/migrations/.*