ci: update workflow for 3.14 branch

Author: methane

.github/workflows/update.yml

@@ -13,7 +13,7 @@ on:
   #    - '3.11'
 
 env:
-  CPYTHON_BRANCH: '3.11'
+  CPYTHON_BRANCH: '3.14'
   LANGUAGE: 'ja'
 
 jobs:
@@ -30,10 +30,10 @@ jobs:
           persist-credentials: false
           ref: ${{ env.CPYTHON_BRANCH }}
           path: cpython
-      - name: Set up Python 3.11
+      - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.11'
+          python-version: '3.13'
           cache: 'pip'
           cache-dependency-path: '**/requirements*.txt'
       - name: Install Transifex CLI
@@ -73,9 +73,9 @@ jobs:
     needs: [update]
     strategy:
       matrix:
-        branch: [ "3.10", "3.9", "3.8" ]
+        branch: [ "3.11" ]
         include:
-          - branch: "3.10"
+          - branch: "3.11"
             overwrite: true
     runs-on: ubuntu-latest
     steps:
@@ -92,10 +92,10 @@ jobs:
         with:
           ref: ${{ matrix.branch }}
           path: ${{ matrix.branch }}
-      - name: Set up Python 3.11
+      - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.11'
+          python-version: '3.13'
           cache: 'pip'
           cache-dependency-path: '**/requirements*.txt'
       - name: Install dependencies