Update dependency google-cloud-core to v1.7.2

Author: renovate-bot

requirements.txt

@@ -6,7 +6,7 @@ colorama==0.4.4; python_version >= "3.5" and python_full_version < "3.0.0" and s
 google-api-core==1.26.0; python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version >= "3.6"
 google-auth==1.26.1; python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version >= "3.6"
 google-cloud-bigquery==2.6.1; python_version >= "3.6"
-google-cloud-core==1.6.0; python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version >= "3.6"
+google-cloud-core==1.7.2; python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version >= "3.6"
 google-cloud-storage==1.36.0; (python_version >= "2.7" and python_full_version < "3.0.0") or (python_full_version >= "3.6.0")
 google-crc32c==1.1.2; python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version >= "3.6"
 google-resumable-media==1.2.0; python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version >= "3.6"