[pre-commit.ci] pre-commit autoupdate (#869)

<!--pre-commit.ci start-->
updates:
- [github.com/asottile/setup-cfg-fmt: v2.2.0 →
v2.3.0](asottile/setup-cfg-fmt@v2.2.0...v2.3.0)
<!--pre-commit.ci end-->

---------

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

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -18,7 +18,7 @@ repos:
   hooks:
   - id: pyproject-fmt
 - repo: https://github.com/asottile/setup-cfg-fmt
-  rev: v2.2.0
+  rev: v2.3.0
   hooks:
   - id: setup-cfg-fmt
     args:

setup.cfg

@@ -10,7 +10,7 @@ author_email = otto@live.ca
 maintainer = Adam Johnson
 maintainer_email = me@adamj.eu
 license = MIT
-license_file = LICENSE
+license_files = LICENSE
 classifiers =
     Development Status :: 5 - Production/Stable
     Environment :: Web Environment