linter github workflow - use uv for acquiring black

Previously it was using Python 3.12 for everything, therefore syntax errors from Python 3.9 (e.g. `match` statement in ifcopenshell-python) went under the radar.

.github/workflows/ci-black-formatting.yaml

@@ -4,9 +4,6 @@ on:
   push:
   pull_request:
 
-env:
-  PYTHON_VERSION: "3.12"
-
 jobs:
   lint-formatting:
     runs-on: ubuntu-latest
@@ -17,29 +14,33 @@ jobs:
       - name: Action - install python
         uses: actions/setup-python@v5.3.0
         with:
-          python-version: "${{ env.PYTHON_VERSION }}"
+          python-version: "3.9"
+
+      - name: Action - install python
+        uses: actions/setup-python@v5.3.0
+        with:
+          python-version: "3.11"
 
       - name: Install dependencies
         run: |
-          python3 -m pip install --upgrade pip
-          python3 -m pip install 'black>=24.10.0'
           curl -LsSf https://astral.sh/uv/install.sh | sh
           uv tool install ruff
+          uv tool install black
 
       # black doesn't catch all syntax errors, so we check them explicitly.
       - name: Check syntax errors
         id: syntax-errors
         run: |
           ERROR=0
-          python3 -W error -m compileall -q src/ifcopenshell-python || ERROR=1
-          python3 -W error -m compileall -q src/bonsai || ERROR=1
+          python3.9 -W error -m compileall -q src/ifcopenshell-python || ERROR=1
+          python3.11 -W error -m compileall -q src/bonsai || ERROR=1
           exit $ERROR
         continue-on-error: true
 
       - name: Black formatter
         id: black
         run: |
-          python3 -m black --diff --check .
+          uvx black --diff --check .
         continue-on-error: true
 
       - name: Ruff check