Use macos-13 on CI for now

Author: ra1028

.github/workflows/docs.yml

@@ -13,7 +13,7 @@ env:
 jobs:
   publish-docs:
     name: Publish Documentation
-    runs-on: macos-14
+    runs-on: macos-13
     steps:
       - uses: actions/checkout@v4
       - name: Build docs

.github/workflows/test.yml

@@ -15,7 +15,7 @@ env:
 jobs:
   test:
     name: Test
-    runs-on: macos-14
+    runs-on: macos-13
     strategy:
       matrix:
         platform:
@@ -33,23 +33,23 @@ jobs:
 
   test_examples:
     name: Test iOS examples
-    runs-on: macos-14
+    runs-on: macos-13
     steps:
       - uses: actions/checkout@v4
       - name: Test example iOS
         run: scripts/test.sh example-ios ios
 
   benchmark:
     name: Benchmark
-    runs-on: macos-14
+    runs-on: macos-13
     steps:
       - uses: actions/checkout@v4
       - name: Run benchmark test
         run: scripts/test.sh benchmark ios
 
   validation:
     name: Validation
-    runs-on: macos-14
+    runs-on: macos-13
     steps:
       - uses: actions/checkout@v4
       - name: Show environments