CI: try macos-14-large (Intel)

This might provide better (or worse) stability

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

.github/workflows/release.yml

@@ -16,7 +16,7 @@ env:
 jobs:
   artifacts-darwin:
     name: Artifacts Darwin
-    runs-on: macos-12
+    runs-on: macos-12  # The oldest available version
     timeout-minutes: 20
     steps:
     - name: "Show xcode and SDK version"

.github/workflows/test.yml

@@ -153,7 +153,7 @@ jobs:
   integration:
     name: Integration tests
     # on macOS 12, the default vmType is QEMU
-    runs-on: macos-12
+    runs-on: macos-12  # Do not upgrade until GitHub removes macos-12
     timeout-minutes: 120
     steps:
     - uses: actions/checkout@v4
@@ -320,7 +320,7 @@ jobs:
 
   vmnet:
     name: "VMNet test"
-    runs-on: macos-12
+    runs-on: macos-14-large
     timeout-minutes: 120
     steps:
     - uses: actions/checkout@v4
@@ -370,7 +370,7 @@ jobs:
 
   upgrade:
     name: "Upgrade test"
-    runs-on: macos-12
+    runs-on: macos-14-large
     timeout-minutes: 120
     strategy:
       matrix:
@@ -400,8 +400,8 @@ jobs:
 
   vz:
     name: "vz"
-    # on macOS 13, the default vmType is VZ
-    runs-on: macos-13
+    # on macOS >= 13, the default vmType is VZ
+    runs-on: macos-14-large
     timeout-minutes: 120
     strategy:
       fail-fast: false