Regeneration check found diff

[github-actions]

The post-submit regeneration check found a diff.

Diff summary:

 .../snippets/filters/filter_snippets_async_test.py        |  4 +---
.../samples/snippets/reads/read_snippets.py               |  1 +
.../google-cloud-bigtable/samples/testdata/singer_pb2.py  | 15 +++++++++++++++
3 files changed, 17 insertions(+), 3 deletions(-)

[github-actions]

Another failure with diff occurred: https://github.com/googleapis/google-cloud-python/actions/runs/27367107765