CI: Use sage develop branch

Author: mkoeppe

.github/workflows/sage.yml

@@ -125,8 +125,7 @@ jobs:
 
   test:
     # https://github.com/sagemath/sage/blob/develop/.github/workflows/docker.yml
-    # Use branch u/mkoeppe/numpy_1_23_x__scipy_1_9_x for a fix for uppercase github repo names (FFY00)
-    uses: sagemath/sagetrac-mirror/.github/workflows/docker.yml@u/mkoeppe/numpy_1_23_x__scipy_1_9_x
+    uses: sagemath/sagetrac-mirror/.github/workflows/docker.yml@develop
     with:
       tox_system_factors: ${{ needs.build.outputs.systems }}
       tox_packages_factors: >-
@@ -142,9 +141,9 @@ jobs:
       sage_ref: develop
       upstream_artifact: upstream
       sage_trac_git: https://github.com/sagemath/sagetrac-mirror.git
-      # Temporarily test on the branch from sage ticket https://trac.sagemath.org/ticket/34081 (scipy 1.9.x)
+      # Temporarily test on the branch from a sage ticket
       # (this is a no-op after that ticket is merged)
-      sage_trac_ticket: 34081
+      # sage_trac_ticket: 34081
       # Docker targets (stages) to tag
       docker_targets: "with-targets"
       # We prefix the image name with the SPKG name ("meson-python-") to avoid the error