Update CI environment

Author: subdan

.github/workflows/release.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   release:
     name: Publish GitHub and Cocoapods release
-    runs-on: macos-12
+    runs-on: macos-14
     steps:
       - name: Checkout
         uses: actions/checkout@v2

.github/workflows/tests.yml

@@ -14,7 +14,7 @@ on:
 jobs:
   test:
     name: Run tests on macOS
-    runs-on: macos-12
+    runs-on: macos-14
     steps:
       - name: Checkout
         uses: actions/checkout@v2