export_bundler was removed from pycolmap.

[betstick]

The deep-image-matching package has a requirement for pycolmap>=3.12.0 but this version does not have the necessary export functions. Here's the relevant change: https://github.com/colmap/colmap/pull/2399

This causes the reconstruction to fail. Removing the newer version and installing manually with pip install pycolmap==0.5.0 --no-deps fixes the issue.