[pre-commit.ci] pre-commit autoupdate (#149)

updates:
- [github.com/asottile/pyupgrade: v2.19.1 → v2.20.0](asottile/pyupgrade@v2.19.1...v2.20.0)
- [github.com/PyCQA/isort: 5.8.0 → 5.9.1](PyCQA/isort@5.8.0...5.9.1)
- [github.com/psf/black: 21.5b2 → 21.6b0](psf/black@21.5b2...21.6b0)
- [github.com/nbQA-dev/nbQA: 0.10.0 → 0.13.1](nbQA-dev/nbQA@0.10.0...0.13.1)
- [github.com/FlamingTempura/bibtex-tidy: 3559fc3b264d67441cbfcaec53500cbd66cefc7e → 59929ccba5fa85b9bf8ca1d35fedf92206651959](FlamingTempura/bibtex-tidy@3559fc3...59929cc)

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

.pre-commit-config.yaml

@@ -13,17 +13,17 @@ repos:
       - id: mixed-line-ending
       - id: trailing-whitespace
   - repo: https://github.com/asottile/pyupgrade
-    rev: 'v2.19.1'
+    rev: 'v2.20.0'
     hooks:
       - id: pyupgrade
         args:
           - --py36-plus
   - repo: https://github.com/PyCQA/isort
-    rev: '5.8.0'
+    rev: '5.9.1'
     hooks:
       - id: isort
   - repo: https://github.com/psf/black
-    rev: '21.5b2'
+    rev: '21.6b0'
     hooks:
       - id: black
   - repo: https://github.com/PyCQA/flake8
@@ -33,12 +33,12 @@ repos:
         args:
           - --max-line-length=100
   - repo: https://github.com/nbQA-dev/nbQA
-    rev: 0.10.0
+    rev: 0.13.1
     hooks:
       - id: nbqa-black
       - id: nbqa-pyupgrade
   - repo: https://github.com/FlamingTempura/bibtex-tidy
-    rev: '3559fc3b264d67441cbfcaec53500cbd66cefc7e'
+    rev: '59929ccba5fa85b9bf8ca1d35fedf92206651959'
     hooks:
       - id: bibtex-tidy
         args: