[TEMP: macOS CI: Check without MACOSX_DEPLOYMENT_TARGET env var]

To check for #3864 with `-preserve-dwarf-line-section`.

Author: kinke

.github/workflows/main.yml

@@ -120,8 +120,8 @@ jobs:
     runs-on: ${{ matrix.os }}
     container: ${{ matrix.container_image }}
     timeout-minutes: 90
-    env:
-      MACOSX_DEPLOYMENT_TARGET: ${{ matrix.arch == 'arm64' && '11.0' || '10.12' }}
+    #env:
+    #  MACOSX_DEPLOYMENT_TARGET: ${{ matrix.arch == 'arm64' && '11.0' || '10.12' }}
     steps:
       - name: 'Set up Linux container'
         if: matrix.container_image