Upgrade pre-commit; normalize additional_dependencies (marshmallow-code#514)

Author: sloria

.pre-commit-config.yaml

@@ -13,7 +13,7 @@ repos:
   rev: 3.7.8
   hooks:
   - id: flake8
-    additional_dependencies: ['flake8-bugbear==19.3.0']
+    additional_dependencies: [flake8-bugbear==19.3.0]
 - repo: https://github.com/asottile/blacken-docs
   rev: v1.3.0
   hooks:

setup.py

@@ -4,7 +4,7 @@
 EXTRAS_REQUIRE = {
     "yaml": ["PyYAML>=3.10"],
     "validation": ["prance[osv]>=0.11"],
-    "lint": ["flake8==3.7.9", "flake8-bugbear==19.8.0", "pre-commit~=1.18"],
+    "lint": ["flake8==3.7.9", "flake8-bugbear==19.8.0", "pre-commit~=1.20"],
     "docs": [
         "marshmallow>=2.19.2",
         "pyyaml==5.1.2",

tox.ini

@@ -15,7 +15,7 @@ deps =
 commands = pytest {posargs}
 
 [testenv:lint]
-deps = pre-commit~=1.18
+deps = pre-commit~=1.20
 skip_install = true
 commands = pre-commit run --all-files --show-diff-on-failure