[pre-commit.ci] pre-commit autoupdate (#950)

* [pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/psf/black: 21.11b1 → 21.12b0](https://github.com/psf/black/compare/21.11b1...21.12b0)

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.pre-commit-config.yaml

@@ -38,7 +38,7 @@ repos:
   - id: isort
 
 - repo: https://github.com/psf/black
-  rev: 21.11b1
+  rev: 21.12b0
   hooks:
   - id: black
 

cibuildwheel/projectfiles.py

@@ -12,7 +12,6 @@ if sys.version_info < (3, 8):
     def get_constant(x: ast.Str) -> str:
         return x.s
 
-
 else:
     Constant = ast.Constant