Bump ns1-python from 0.14.0 to 0.15.0

Bumps [ns1-python](https://github.com/ns1/ns1-python) from 0.14.0 to 0.15.0.
- [Release notes](https://github.com/ns1/ns1-python/releases)
- [Changelog](https://github.com/ns1/ns1-python/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ns1/ns1-python/compare/v0.14.0...v0.15.0)

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

requirements.txt

@@ -14,7 +14,7 @@ ipaddress==1.0.23
 jmespath==0.9.4
 msrestazure==0.6.2
 natsort==6.2.1
-ns1-python==0.14.0
+ns1-python==0.15.0
 ovh==0.5.0
 pycountry-convert==0.7.2
 pycountry==19.8.18