Admin: Support Python 3.13

Author: bblommers

.github/workflows/ci.yaml

@@ -17,12 +17,15 @@ jobs:
           - '3.10'
           - '3.11'
           - '3.12'
+          - '3.13.0-beta.2'
 
     steps:
       - uses: actions/checkout@master
 
       - name: Set up Python
         uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
 
       - name: Install dependencies
         run: |
@@ -44,16 +47,17 @@ jobs:
           - '3.10'
           - '3.11'
           - '3.12'
+          - '3.13.0-beta.2'
         implementation:
           - ''      # CPython
           - 'pypy'  # PyPy
         exclude:    # unreleased;
-          - implementation: 'pypy'
-            python-version: '3.10'
           - implementation: 'pypy'
             python-version: '3.11'
           - implementation: 'pypy'
             python-version: '3.12'
+          - implementation: 'pypy'
+            python-version: '3.13.0-beta.2'
 
     steps:
       - uses: actions/checkout@master