build: bump intra-family floors to >=2026.8.22.1

Release 2026.8.22.1 promoted all five libraries together (nightly run 50),
so the committed source floors move from the previous promoted set
2026.7.29.2 to the first version carrying the JAX-default dependency
handshake plus the fnnls JAX fix and the rectangular mesh split. This is
step (1) of the jax-default-dependency follow-ups recorded in
PyAutoMind active.md.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015GsUfbCwPd4XC8kpsiUJp7

Author: claude

pyproject.toml

@@ -28,7 +28,7 @@ dependencies = [
     # 2026.4.30.582 and failed on `af.Latent`). Bump to the first release with
     # JAX in the family's base dependencies once it exists (#702), so
     # backtracking cannot pair this autolens with a jax-optional chain.
-    "autogalaxy>=2026.7.29.2",
+    "autogalaxy>=2026.8.22.1",
     "nautilus-sampler==1.0.5"
 ]