Update macos runner

Author: michalsta

.github/workflows/build_wheels.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         #os: [ubuntu-20.04, windows-2019, macos-10.15]
-        os: [ubuntu-latest, ubuntu-24.04-arm, windows-latest, windows-11-arm, macos-13, macos-latest]
+        os: [ubuntu-latest, ubuntu-24.04-arm, windows-latest, windows-11-arm, macos-15-intel, macos-latest]
 
     steps:
       - uses: actions/checkout@v5

.github/workflows/run_tests.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         # macos-13 is an intel runner, macos-14 is apple silicon
-        os: [ubuntu-latest, ubuntu-24.04-arm, windows-latest, macos-13, macos-latest, windows-11-arm]
+        os: [ubuntu-latest, ubuntu-24.04-arm, windows-latest, macos-15-intel, macos-latest, windows-11-arm]
         python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
         exclude:
         - os: windows-11-arm