Pin macOS abi3 Python version to 3.14

Author: nuno-faria

.github/workflows/build.yml

@@ -336,7 +336,7 @@ jobs:
 
       - name: Install dependencies
         if: matrix.python-tag == 'abi3'
-        run: uv sync --dev --no-install-package datafusion
+        run: uv sync --python 3.14 --dev --no-install-package datafusion
 
       # Clippy is interpreter-agnostic; run once per OS (against the abi3 entry)
       # so the matrix doesn't pay the cost three times.
@@ -419,7 +419,7 @@ jobs:
 
       - name: Install dependencies
         if: matrix.python-tag == 'abi3'
-        run: uv sync --dev --no-install-package datafusion
+        run: uv sync --python 3.14 --dev --no-install-package datafusion
 
       - name: Build wheel
         uses: ./.github/actions/build-wheel