Upgrade CI to macOS 14 (#277)

Author: calcmogul

.github/workflows/ci.yml

@@ -7,12 +7,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-11, windows-2022, ubuntu-22.04]
+        os: [macos-14, windows-2022, ubuntu-22.04]
         python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
         exclude:
-          - os: macos-11
+          - os: macos-14
             python-version: '3.8'
-          - os: macos-11
+          - os: macos-14
             python-version: '3.9'
     name: Test - ${{ matrix.os }}, ${{ matrix.python-version }}
     runs-on: ${{ matrix.os }}