Update dependency google-cloud-datacatalog to v0.7.0 [(#3320)](GoogleCloudPlatform/python-docs-samples#3320)

Co-authored-by: Bu Sun Kim <[email protected]>

Author: renovate-bot

samples/snippet/requirements.txt

@@ -1 +1 @@
-google-cloud-datacatalog==0.6.0
+google-cloud-datacatalog==0.7.0