ci: update x86_64-darwin runner to build on macOS 15 images

Author: Sorixelle

.github/workflows/buildAndCache.yml

@@ -8,9 +8,9 @@ jobs:
     strategy:
       matrix:
         os:
-          - ubuntu-latest # x86_64-linux
-          - macos-13      # x86_64-darwin
-          - macos-latest  # aarch64-darwin
+          - ubuntu-latest   # x86_64-linux
+          - macos-15-intel  # x86_64-darwin
+          - macos-latest    # aarch64-darwin
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4