Switch to macos-14 runners

Author: vladbat00

.github/workflows/check.yml

@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-14, windows-latest]
         features: [
             "",
             "immutable_ctx",