Update dependency google-api-python-client to v1.10.0 [(#4302)](Googl…

…eCloudPlatform/python-docs-samples#4302)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [google-api-python-client](https://togithub.com/googleapis/google-api-python-client) | minor | `==1.9.3` -> `==1.10.0` |

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### Release Notes

<details>
<summary>googleapis/google-api-python-client</summary>

### [`v1.10.0`](https://togithub.com/googleapis/google-api-python-client/blob/master/CHANGELOG.md#&#8203;1100-httpswwwgithubcomgoogleapisgoogle-api-python-clientcomparev193v1100-2020-07-15)

[Compare Source](https://togithub.com/googleapis/google-api-python-client/compare/v1.9.3...v1.10.0)

##### Features

-   allow to use 'six.moves.collections_abc.Mapping' in 'client_options.from_dict()' ([#&#8203;943](https://www.github.com/googleapis/google-api-python-client/issues/943)) ([21af37b](https://www.github.com/googleapis/google-api-python-client/commit/21af37b11ea2d6a89b3df484e1b2fa1d12849510))
-   Build universal wheels ([#&#8203;948](https://www.github.com/googleapis/google-api-python-client/issues/948)) ([3e28a1e](https://www.github.com/googleapis/google-api-python-client/commit/3e28a1e0d47f829182cd92f37475ab91fa5e4afc))
-   discovery supports retries ([#&#8203;967](https://www.github.com/googleapis/google-api-python-client/issues/967)) ([f3348f9](https://www.github.com/googleapis/google-api-python-client/commit/f3348f98bf91a88a28bf61b12b95e391cc3be1ff)), closes [#&#8203;848](https://www.github.com/googleapis/google-api-python-client/issues/848)

##### Documentation

-   consolidating and updating the Contribution Guide ([#&#8203;964](https://www.github.com/googleapis/google-api-python-client/issues/964)) ([63f97f3](https://www.github.com/googleapis/google-api-python-client/commit/63f97f37daee37a725eb05df3097b20d5d4eaaf0)), closes [#&#8203;963](https://www.github.com/googleapis/google-api-python-client/issues/963)

##### [1.9.3](https://www.github.com/googleapis/google-api-python-client/compare/v1.9.2...v1.9.3) (2020-06-10)

##### Bug Fixes

-   update GOOGLE_API_USE_MTLS values ([#&#8203;940](https://www.github.com/googleapis/google-api-python-client/issues/940)) ([19908ed](https://www.github.com/googleapis/google-api-python-client/commit/19908edcd8a3df1db41e34100acc1f15c3c99397))

##### [1.9.2](https://www.github.com/googleapis/google-api-python-client/compare/v1.9.1...v1.9.2) (2020-06-04)

##### Bug Fixes

-   bump api-core version ([#&#8203;936](https://www.github.com/googleapis/google-api-python-client/issues/936)) ([ee53b3b](https://www.github.com/googleapis/google-api-python-client/commit/ee53b3b32a050874ba4cfb491fb384f94682c824))

##### [1.9.1](https://www.github.com/googleapis/google-api-python-client/compare/v1.9.0...v1.9.1) (2020-06-02)

##### Bug Fixes

-   fix python-api-core dependency issue ([#&#8203;931](https://www.github.com/googleapis/google-api-python-client/issues/931)) ([42028ed](https://www.github.com/googleapis/google-api-python-client/commit/42028ed2b2be47f85b70eb813185264f1f573d01))

</details>

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samples/snippets/api/requirements.txt

@@ -1,3 +1,3 @@
-google-api-python-client==1.9.3
+google-api-python-client==1.10.0
 google-auth==1.19.0
 google-auth-httplib2==0.0.4