build(python): migrate to pyproject.toml and bump python to 3.14 (#4772)

.github/workflows/localize.yml

@@ -25,16 +25,16 @@ jobs:
       - name: Checkout
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
 
-      - name: Install Python 3.9
+      - name: Install Python
         uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405  # v6.2.0
         with:
-          python-version: '3.9'
+          python-version: '3.14'
 
-      - name: Set up Python 3.9 Dependencies
+      - name: Set up Python Dependencies
+        working-directory: scripts
         run: |
-          cd ./scripts
           python -m pip install --upgrade pip setuptools
-          python -m pip install -r requirements.txt
+          python -m pip install ".[locale]"
 
       - name: Set up xgettext
         run: |