fix: drop stale astropy <=7.2.0 cap — floor at >=5.0

A fresh install downgraded users to astropy 7.2.0 while the stack runs and
passes under 8.0.1. Keep the floor, drop the cap, matching the floors-not-pins
convention (#433) already used for the intra-family deps.

Part of #434.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: 2 people

pyproject.toml

@@ -29,7 +29,7 @@ dependencies = [
     # "version X does not provide the extra 'jax'" is a pip *warning*, not an
     # error, so a pre-extras release is a legal solution. PyAutoLens#687.
     "autonerves>=2026.7.29.2",
-    "astropy>=5.0,<=7.2.0",
+    "astropy>=5.0",
     "decorator>=4.0.0",
     "dill>=0.3.1.1",
     "matplotlib>=3.7.0",