switch from macos-13 to macos-15-intel on CI (#1740)

Author: slayoo

.github/workflows/readme_snippets.yml

@@ -16,7 +16,7 @@ jobs:
   python:
     strategy:
       matrix:
-        platform: [ubuntu-latest, macos-13, macos-14, windows-latest]
+        platform: [ubuntu-latest, macos-15-intel, macos-14, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps:
       - uses: actions/[email protected]

.github/workflows/tests.yml

@@ -25,7 +25,7 @@ jobs:
   env-unit-tests-setup:
     strategy:
       matrix:
-        platform: [ ubuntu-24.04, macos-13, macos-14, windows-latest ]
+        platform: [ ubuntu-24.04, macos-15-intel, macos-14, windows-latest ]
         python-version: [ "3.9", "3.12" ]
     runs-on: ${{ matrix.platform }}
     steps:
@@ -90,7 +90,7 @@ jobs:
     needs: env-unit-tests-setup
     strategy:
       matrix:
-        platform: [ ubuntu-24.04, macos-13, macos-14, windows-latest ]
+        platform: [ ubuntu-24.04, macos-15-intel, macos-14, windows-latest ]
         python-version: [ "3.9", "3.12" ]
     runs-on: ${{ matrix.platform }}
     env: