Update dependency google-cloud-containeranalysis to v0.3.1 [(#3055)](https://github.com/GoogleCloudPlatform/python-docs-samples/issues/3055)
Update dependency google-cloud-containeranalysis to v0.3.1 [(#3055)](https://github.com/GoogleCloudPlatform/python-docs-samples/issues/3055)

Co-authored-by: Leah E. Cole <a5082685b0b89abc4f85079ca3a58177707489f8@users.noreply.github.com>
googleapis/python-containeranalysis,googleapis/python-containeranalysis