Add 3.13, remove 3.8 from CI (#292)

Author: mscroggs

.github/workflows/coveralls.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.12"
+          python-version: "3.13"
       - name: Load matrix cache
         id: cache-restore
         uses: actions/cache/restore@v3

.github/workflows/defelement.yml

@@ -11,7 +11,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.12"
+          python-version: "3.13"
       - name: Load matrix cache
         id: cache-restore
         uses: actions/cache/restore@v3

.github/workflows/release.yml

@@ -16,10 +16,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python 3.12
+    - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: "3.12"
+        python-version: "3.13"
 
     - name: Install PyGitHub
       run: python3 -m pip install PyGitHub

.github/workflows/run-tests.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - name: Set up Python
         uses: actions/setup-python@v4
@@ -48,14 +48,14 @@ jobs:
           path: /home/runner/.cache/symfem
           key: symfem-matrix-cache-${{ github.run_id }}
           restore-keys: symfem-matrix-cache
-        if: ${{ matrix.python-version == '3.12' && github.ref == 'refs/heads/main' }}
+        if: ${{ matrix.python-version == '3.13' && github.ref == 'refs/heads/main' }}
 
   run-tests-against-basix:
     name: Run tests against Basix
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - name: Set up Python
         uses: actions/setup-python@v4

.github/workflows/style-checks.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: 3.12
+          python-version: 3.13
       - uses: actions/checkout@v4
       - run: python3 -m pip install -e .[style,docs]
       - run: |

.github/workflows/test-packages.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - name: Set up Python
         uses: actions/setup-python@v4
@@ -42,7 +42,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: conda-incubator/setup-miniconda@v2
         with:
@@ -75,7 +75,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - name: Set up Python
         uses: actions/setup-python@v4