Try out Intel macOS

Author: DilumAluthge

.github/workflows/ci.yml

@@ -58,7 +58,7 @@ jobs:
         github-runner:
           - ubuntu-latest
           # - windows-latest # TODO: uncomment this line
-          # - macos-13 # macos-13 = Intel. # TODO: uncomment this line
+          - macos-13 # macos-13 = Intel.
           # - macos-14 # macos-14 = Apple Silicon. # TODO: uncomment this line
         coverage:
           - 'true'