fix: revert dependency pins committed by release workflow

The release workflow incorrectly committed pinned dependency versions to
main. These pins should only exist in the built wheel, not in the source.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

pyproject.toml

@@ -23,8 +23,8 @@ classifiers = [
 ]
 keywords = ["cli"]
 dependencies = [
-    "autofit==2026.4.13.5",
-    "autoarray==2026.4.13.5",
+    "autofit",
+    "autoarray",
     "colossus==1.3.1",
     "astropy>=5.0,<=7.2.0",
     "nautilus-sampler==1.0.5"