Use clang-format version from requirements_dev file (#6606)

.github/workflows/ci.yml

@@ -20,7 +20,6 @@ permissions:
 env:
   DEFAULT_PYTHON: "3.9"
   PYUPGRADE_TARGET: "--py39-plus"
-  CLANG_FORMAT_VERSION: "13.0.1"
 
 concurrency:
   # yamllint disable-line rule:line-length
@@ -239,7 +238,7 @@ jobs:
       - name: Install clang-format
         run: |
           . venv/bin/activate
-          pip install clang-format==${{ env.CLANG_FORMAT_VERSION }}
+          pip install clang-format -c requirements_dev.txt
       - name: Run clang-format
         run: |
           . venv/bin/activate

requirements_dev.txt

@@ -1,4 +1,4 @@
 # Useful stuff when working in a development environment
-clang-format==13.0.1
-clang-tidy==14.0.6
-yamllint==1.35.1
+clang-format==13.0.1  # also change in .pre-commit-config.yaml and Dockerfile when updating
+clang-tidy==14.0.6  # When updating clang-tidy, also update Dockerfile
+yamllint==1.35.1  # also change in .pre-commit-config.yaml when updating