chore(deps): update dependency google-cloud-securitycenter to v1.7.0 (#…

…237)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [google-cloud-securitycenter](https://togithub.com/googleapis/python-securitycenter) | `==1.6.0` -> `==1.7.0` | [![age](https://badges.renovateapi.com/packages/pypi/google-cloud-securitycenter/1.7.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/google-cloud-securitycenter/1.7.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/google-cloud-securitycenter/1.7.0/compatibility-slim/1.6.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/google-cloud-securitycenter/1.7.0/confidence-slim/1.6.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/python-securitycenter</summary>

### [`v1.7.0`](https://togithub.com/googleapis/python-securitycenter/blob/master/CHANGELOG.md#&#8203;170-httpswwwgithubcomgoogleapispython-securitycentercomparev160v170-2021-10-08)

[Compare Source](https://togithub.com/googleapis/python-securitycenter/compare/v1.6.0...v1.7.0)

##### Features

-   Added type field to the resource which is surfaced in NotificationMessage ([a233f7a](https://www.github.com/googleapis/python-securitycenter/commit/a233f7a0d85ba1a2932a1ee8305e48eda5aafa75))
-   Added vulnerability field to Finding ([#&#8203;235](https://www.togithub.com/googleapis/python-securitycenter/issues/235)) ([a233f7a](https://www.github.com/googleapis/python-securitycenter/commit/a233f7a0d85ba1a2932a1ee8305e48eda5aafa75))

</details>

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packages/google-cloud-securitycenter/samples/snippets/requirements.txt

@@ -1,2 +1,2 @@
 google-cloud-pubsub==2.8.0
-google-cloud-securitycenter==1.6.0
+google-cloud-securitycenter==1.7.0