Revert to python 3.13 for tests

Bump actions versions

Author: jeromekelleher

.github/workflows/lint.yml

@@ -5,4 +5,4 @@ on:
 
 jobs:
   Lint:
-    uses: tskit-dev/.github/.github/workflows/lint.yml@v12
+    uses: tskit-dev/.github/.github/workflows/lint.yml@v13

.github/workflows/tests.yml

@@ -9,17 +9,17 @@ on:
 jobs:
   packaging:
     name: Python packaging
-    uses: tskit-dev/.github/.github/workflows/python-packaging.yml@v12
+    uses: tskit-dev/.github/.github/workflows/python-packaging.yml@v13
 
   test:
     name: Python
-    uses: tskit-dev/.github/.github/workflows/python-tests.yml@v12
+    uses: tskit-dev/.github/.github/workflows/python-tests.yml@v13
     with:
       os: ${{ matrix.os }}
       python-version: ${{ matrix.python }}
       coverage-directory: tstrait
     secrets: inherit
     strategy:
       matrix:
-        python: ["3.11", "3.14"]
+        python: ["3.11", "3.13"]
         os: [macos-latest, ubuntu-24.04, windows-latest]