Stop using macos-13 runners (which are being retired)

Author: jonathanhogg

.github/workflows/ci-test.yml

@@ -21,9 +21,9 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ['3.10', '3.11', '3.12', '>=3.13 <3.13.4 || >3.13.4 <3.14']
-        os: [ubuntu-latest, ubuntu-24.04-arm, windows-latest, macos-13, macos-15]
+        os: [ubuntu-latest, ubuntu-24.04-arm, windows-latest, macos-15-intel, macos-15]
         include:
-        - os: macos-13
+        - os: macos-15-intel
           pytest_options: --ignore=tests/test_engine.py
         - os: macos-15
           pytest_options: --ignore=tests/test_engine.py

.github/workflows/release-package.yml

@@ -32,7 +32,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, ubuntu-24.04-arm, macos-13, macos-15, windows-latest]
+        os: [ubuntu-latest, ubuntu-24.04-arm, macos-15-intel, macos-15, windows-latest]
     steps:
     - uses: actions/checkout@v4
     - name: Build wheels