Disable (temporarily) inclusion of OSQP in CI on macOS runners.

Author: Ray Zimmerman

.github/workflows/continuous-integration.yml

@@ -25,7 +25,7 @@ jobs:
       uses: actions/checkout@v4
 
     - name: Include IPOPT?
-      if: matrix.platform == 'matlab' || matrix.os != 'ubuntu-16.04'
+      if: startsWith(matrix.os, 'ubuntu')
       run: echo "INCLUDE_IPOPT=1" >> $GITHUB_ENV
 
     - name: Include OSQP?