change to macos 14 (OpenLiberty#1452)

Author: anusreelakshmi934

.github/workflows/build.yaml

@@ -102,7 +102,7 @@ jobs:
             os: ubuntu-latest
             reportName: linux-test-report
           - runtime: mac
-            os: macOS-latest
+            os: macOS-14
             reportName: mac-test-report
           - runtime: windows
             os: windows-latest