Adjust CI for interim code

Author: rocky

.github/workflows/ubuntu.yml

@@ -24,10 +24,12 @@ jobs:
         python -m pip install pytest
         python -m pip install Mathics3-Module-Base
         # Go over and comment out stuff when next Mathics core and Mathics-scanner are released
+        git clone https://github.com/Mathics3/Mathics3-scanner
+        (cd mathics_scanner && pip3 install -e .[full] --no-build-isolation)
         # python -m pip install -e git+https://github.com/Mathics3/mathics-scanner#egg=Mathics-Scanner[full]
         # Until the next mathics-core release
         git clone https://github.com/Mathics3/mathics-core
-        (cd mathics-core && pip3 install -e .[full])
+        (cd mathics-core && pip3 install -e .[full] --no-build-isolation)
         (cd mathics-core && bash ./admin-tools/make-JSON-tables.sh)
 
     - name: install Mathics3 Module networkx