fix(ci): use cache suffix based on current python version

This avoids having two places to define the version.

Author: nijel

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
       matrix:
         python-version:
         - '3.10'
-        - '3.13'
+        - '3.14'
     env:
       PYTHON_VERSION: ${{ matrix.python-version }}
       PYTHONUNBUFFERED: 1
@@ -28,13 +28,14 @@ jobs:
         persist-credentials: false
 
     - name: Set up Python ${{ matrix.python-version }}
+      id: setup_python
       uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
       with:
         python-version: ${{ matrix.python-version }}
 
     - uses: astral-sh/setup-uv@eb1897b8dc4b5d5bfe39a428a8f2304605e0983c # v7.0.0
       with:
-        cache-suffix: ${{ matrix.python-version }}
+        cache-suffix: ${{ steps.setup_python.outputs.python-version }}
 
     - name: Install System dependencies
       run: |
@@ -65,14 +66,14 @@ jobs:
         persist-credentials: false
 
     - name: Set up Python ${{ matrix.python-version }}
+      id: setup_python
       uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
       with:
         python-version: ${{ matrix.python-version }}
-        allow-prereleases: true
 
     - uses: astral-sh/setup-uv@eb1897b8dc4b5d5bfe39a428a8f2304605e0983c # v7.0.0
       with:
-        cache-suffix: ${{ matrix.python-version }}
+        cache-suffix: ${{ steps.setup_python.outputs.python-version }}
 
     - name: Install System dependencies
       run: |

.github/workflows/ty.yml

@@ -15,13 +15,14 @@ jobs:
         persist-credentials: false
 
     - name: Set up Python
+      id: setup_python
       uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
       with:
-        python-version: 3.13 || 3.14
+        python-version: 3.14
 
     - uses: astral-sh/setup-uv@eb1897b8dc4b5d5bfe39a428a8f2304605e0983c # v7.0.0
       with:
-        cache-suffix: 3.13
+        cache-suffix: ${{ steps.setup_python.outputs.python-version }}
 
     - name: Install System dependencies
       run: |