A weekly digest of client library updates from across the Cloud SDK

## Library A weekly digest of client library updates from across the [Cloud SDK](https://cloud.google.com/sdk). ### Python ### Changes for [google-cloud-bigtable](https://github.com/googleapis/python-bigtable) #### [2.28.1](https://github.com/googleapis/python-bigtable/compare/v2.28.0...v2.28.1) (2025-01-17) ##### Bug Fixes * Allow empty headers for btql routing ([#1072](https://github.com/googleapis/python-bigtable/issues/1072)) ([e7ecfeb](https://github.com/googleapis/python-bigtable/commit/e7ecfeb8984a45c880d9483305964fff347eb4b8))