chore(deps): update dependency google-cloud-videointelligence to v1.16.0 (#65)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [google-cloud-videointelligence](https://github.com/googleapis/python-videointelligence) | minor | `==1.15.0` -> `==1.16.0` |

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### Release Notes

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

### [`v1.16.0`](https://github.com/googleapis/python-videointelligence/blob/master/CHANGELOG.md#&#8203;1160-httpswwwgithubcomgoogleapispython-videointelligencecomparev1150v1160-2020-10-02)

[Compare Source](https://github.com/googleapis/python-videointelligence/compare/v1.15.0...v1.16.0)

##### Features

-   **v1:** add PersonDetection and FaceDetection ([#&#8203;53](https://www.github.com/googleapis/python-videointelligence/issues/53)) ([55415a8](https://www.github.com/googleapis/python-videointelligence/commit/55415a81e738badc997e93d60c37b5dbc8b373ea))
-   video speech transcription [(\[#&#8203;1849\](https://www.github.com/googleapis/python-videointelligence/issues/1849))](https://github.com/GoogleCloudPlatform/python-docs-samples/issues/1849) ([0bb8156](https://www.github.com/googleapis/python-videointelligence/commit/0bb8156ddda4fde4bbdda5f48d21fbbc34a2b0e8))

##### Documentation

-   corrects release badge and link ([#&#8203;36](https://www.github.com/googleapis/python-videointelligence/issues/36)) ([20ad69c](https://www.github.com/googleapis/python-videointelligence/commit/20ad69cefb473565d5065e4b118398c675cd5f79))

</details>

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videointelligence/samples/analyze/requirements.txt

@@ -1,2 +1,2 @@
-google-cloud-videointelligence==1.15.0
+google-cloud-videointelligence==1.16.0
 google-cloud-storage==1.31.2

videointelligence/samples/labels/requirements.txt

@@ -1 +1 @@
-google-cloud-videointelligence==1.15.0
+google-cloud-videointelligence==1.16.0