chore(deps): update dependency google-cloud-contact-center-insights to v1.6.0 (#277)

Author: renovate-bot

contact-center-insights/snippets/requirements.txt

@@ -1,3 +1,3 @@
 google-api-core==2.11.0
 google-cloud-bigquery==3.4.1
-google-cloud-contact-center-insights==1.5.0
+google-cloud-contact-center-insights==1.6.0