Use macOS-13 with Java8 support

Author: hiroyuki-sato

.github/workflows/check.yml

@@ -11,7 +11,7 @@ jobs:
       matrix:
         os:
         - ubuntu-latest
-        - macOS-latest
+        - macos-13  # OpenJDK 8 is not supported on macos-14+ (M1).
         - windows-latest
     steps:
     - uses: actions/checkout@v3