Merge pull request #394 from NeuroML/feat/ci-numpy

ci: tweak pip command

Author: sanjayankur31

.github/workflows/ci.yml

@@ -41,7 +41,7 @@ jobs:
     - name: Upgrade pip, install deps
       run: |
         python -m pip install --upgrade pip
-        pip install numpy<2.0.0 # due to lingering issues with other modules
+        pip install 'numpy<2.0.0' # due to lingering issues with other modules
         pip install .[dev]
 
     - name: List packages so far