chore(ci): pin pyyaml explicitly

.github/workflows/ci.yml

@@ -180,11 +180,17 @@ jobs:
     - name: Set up Python 🐍
       uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 #v6.2.0
       with:
-        python-version: "3.12"
+        python-version: "3.13"
+
+    - name: Install uv
+      uses: astral-sh/setup-uv@5a095e7a2014a4212f075830d4f7277575a9d098 # v7.3.1
+      with:
+        activate-environment: true
+        python-version: "3.13"
 
     - name: pre-commit dependencies
       run: |
-        pip install pyaml
+        uv pip install $(grep -E "^pyyaml==" requirements-dev.txt)
         python build_helpers/pre_commit_update.py
 
   pre-commit:

requirements-dev.txt

@@ -30,4 +30,7 @@ types-requests==2.32.4.20260107
 types-tabulate==0.10.0.20260308
 types-python-dateutil==2.9.0.20260305
 pip-audit==2.10.0
+# For build step in CI
 build==1.4.2
+# For pre-commit-update check
+pyyaml==6.0.3