fix: replace python 3.9 with 3.14

Author: fstagni

.github/workflows/basic.yml

@@ -88,7 +88,7 @@ jobs:
       env:
         REFERENCE_BRANCH: ${{ github['base_ref'] || github['head_ref'] }}
 
-  check-py39:
+  check-py314:
     runs-on: ubuntu-latest
     if: github.event_name != 'push' || github.repository == 'DIRACGrid/DIRAC'
     timeout-minutes: 30
@@ -111,9 +111,9 @@ jobs:
     - uses: actions/checkout@v4
     - name: Fail-fast for outdated pipelines
       run: .github/workflows/fail-fast.sh
-    - name: fix python3.9
+    - name: fix python3.14
       run: |
-        sed -i "s/python =3.11/python =3.9/g" environment.yml
+        sed -i "s/python =3.11/python =3.14/g" environment.yml
     - uses: conda-incubator/setup-miniconda@v3
       with:
         environment-file: environment.yml