fix(deps): histdata>=1.3 is unsatisfiable, pin to >=1.1 (newest on PyPI)

The Autoresearch Loop workflow failed at "Set up Python venv" on every run:
  ERROR: Could not find a version that satisfies the requirement histdata>=1.3
          (from versions: 1.0, 1.1)
histdata never published 1.3 — 1.1 is the newest release. Lower the floor so
pip can resolve and the loop can actually start.

requirements.txt

@@ -5,6 +5,6 @@
 numpy>=2.0
 pandas>=2.2
 pyarrow>=16
-histdata>=1.3        # histdata.com downloader (handles the tk token politely)
+histdata>=1.1        # histdata.com downloader (1.1 is newest on PyPI; 1.3 never existed)
 hmmlearn>=0.3        # regime detector (prepare_regime.py, jepa-fx-risk#13)
 scikit-learn>=1.4    # HMM dependency