Bump h5py from 3.14.0 to 3.15.0 (#573)

Author: dependabot[bot]

pyproject.toml

@@ -24,7 +24,7 @@ dependencies = [
     "dask[dataframe,distributed]==2025.9.1",
     "empyrical-reloaded==0.5.12",
     "exchange_calendars==4.11.1",
-    "h5py==3.14.0",
+    "h5py==3.15.0",
     "hurst==0.0.5",
     "ib-fundamental==0.0.5",
     "ib_async==1.0.3",