Update boost-histogram to version 1.6.1 (#364)

Co-authored-by: Agriya Khetarpal <[email protected]>

Author: henryiii

packages/boost-histogram/meta.yaml

@@ -1,19 +1,14 @@
 package:
   name: boost-histogram
-  version: 1.5.0
-  # boost-histogram-1.5.1 does not appear to be a Python project: no pyproject.toml or setup.py
-  pinned: true
+  version: 1.6.1
   top-level:
     - boost_histogram
 source:
-  url: https://files.pythonhosted.org/packages/8d/51/96712ed4e1d64618d3e76aac2d1f96e2f4856120012f0dad51adf42c78e4/boost_histogram-1.5.0.tar.gz
-  sha256: 0623f010e6c52e5d018767723959686090db07fc30f0d1d8475b5d663c5ddb2c
+  url: https://files.pythonhosted.org/packages/source/b/boost_histogram/boost_histogram-1.6.1.tar.gz
+  sha256: cbe67507f62063590395cc9fe177bf979f26a53c0574365f8241b883b9a6f756
 requirements:
   run:
     - numpy # runtime only
-  constraint:
-    # Fixed in https://github.com/scikit-hep/boost-histogram/pull/1024 I guess
-    - pybind11<3
 about:
   home: https://github.com/scikit-hep/boost-histogram
   PyPI: https://pypi.org/project/boost-histogram