Bump google-cloud-core from 1.3.0 to 1.4.1

Bumps [google-cloud-core](https://github.com/googleapis/python-cloud-core) from 1.3.0 to 1.4.1.
- [Release notes](https://github.com/googleapis/python-cloud-core/releases)
- [Changelog](https://github.com/googleapis/python-cloud-core/blob/master/CHANGELOG.md)
- [Commits](https://github.com/googleapis/python-cloud-core/compare/v1.3.0...v1.4.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

requirements.txt

@@ -8,7 +8,7 @@ docutils==0.16
 dyn==1.8.1
 edgegrid-python==1.1.1
 futures==3.2.0; python_version < '3.2'
-google-cloud-core==1.3.0
+google-cloud-core==1.4.1
 google-cloud-dns==0.32.0
 ipaddress==1.0.23; python_version < '3.3'
 jmespath==0.10.0