fix: Add pyproj as explicit dependency

pyproj is directly imported in portfolio_app/toronto/parsers/geo.py
but was only available as a transitive dependency of geopandas.
Adding it explicitly ensures reliable installation.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

pyproject.toml

@@ -34,6 +34,7 @@ dependencies = [
     "pandas>=2.3",
     "geopandas>=1.1",
     "shapely>=2.0",
+    "pyproj>=3.6",
 
     # Visualization
     "dash>=3.3",