[pre-commit.ci] pre-commit autoupdate (#1473)

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

.pre-commit-config.yaml

@@ -10,7 +10,7 @@ exclude: >
 repos:
 
   - repo: git://github.com/pre-commit/pre-commit-hooks
-    rev: v2.2.3
+    rev: v4.0.1
     hooks:
     - id: check-json
     - id: check-yaml
@@ -25,7 +25,7 @@ repos:
   #   - id: setup-cfg-fmt
 
   - repo: https://github.com/mgedmin/check-manifest
-    rev: "0.46"
+    rev: "0.47"
     hooks:
     - id: check-manifest
       args: [--no-build-isolation]
@@ -47,16 +47,16 @@ repos:
       entry: python scripts/check_doc_requirements.py
 
   - repo: https://github.com/pycqa/isort
-    rev: 5.8.0
+    rev: 5.9.3
     hooks:
     - id: isort
 
   - repo: https://github.com/psf/black
-    rev: 20.8b1
+    rev: 21.9b0
     hooks:
     - id: black
 
-  - repo: https://gitlab.com/pycqa/flake8
-    rev: 3.8.4
+  - repo: https://github.com/PyCQA/flake8
+    rev: 4.0.1
     hooks:
     - id: flake8

jupyter_book/pdf.py

@@ -114,7 +114,7 @@ def update_latex_documents(latex_documents, latexoverrides):
 
 
 def latex_document_components(latex_documents):
-    """ Return a dictionary of latex_document components by name """
+    """Return a dictionary of latex_document components by name"""
     latex_tuple_components = {}
     for idx, item in enumerate(LATEX_DOCUMENTS):
         # skip if latex_documents doesn't doesn't contain all elements
@@ -126,7 +126,7 @@ def latex_document_components(latex_documents):
 
 
 def latex_document_tuple(components):
-    """ Return a tuple for latex_documents from named components dictionary """
+    """Return a tuple for latex_documents from named components dictionary"""
     latex_doc = []
     for item in LATEX_DOCUMENTS:
         if item not in components.keys():