Starlink doesn't work with any python >= 3.10.

Author: rmjarvis

.github/workflows/ci.yml

@@ -161,6 +161,12 @@ jobs:
                 pip install -U matplotlib
 
                 pip install -U astroplan
+
+            # Starlink doesn't seem to work with 3.10+.
+            # Revisit from time to time to see if they fix it.
+            - name: Install starlink
+              if: matrix.py == 3.9
+              run: |
                 pip install -U starlink-pyast
 
             - name: Install CPython-only dependencies