Fix bug in download_weights

[ejm714]

Fix parenthesis so destination_dir is a PosixPath

Bonus fix:

• removes ceiling for protobuf since this is handled by the latest tensorboard release

[github-actions]

🚀 Deployed on https://deploy-preview-194--silly-keller-664934.netlify.app

[codecov-commenter]

Codecov Report

Merging #194 (8fe5374) into master (c2c7a94) will not change coverage.
The diff coverage is 100.0%.

❗ Current head 8fe5374 differs from pull request most recent head e455d28. Consider uploading reports for the commit e455d28 to get more accurate results

@@          Coverage Diff           @@
##           master    #194   +/-   ##
======================================
  Coverage    85.3%   85.3%           
======================================
  Files          30      30           
  Lines        1858    1858           
======================================
  Hits         1585    1585           
  Misses        273     273           

Impacted Files	Coverage Δ
zamba/models/utils.py	100.0% <100.0%> (ø)