chore(deps): update dependency google-auth-httplib2 to v0.1.0 (#80)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [google-auth-httplib2](https://togithub.com/GoogleCloudPlatform/google-auth-library-python-httplib2) | `==0.0.4` -> `==0.1.0` | [![age](https://badges.renovateapi.com/packages/pypi/google-auth-httplib2/0.1.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/google-auth-httplib2/0.1.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/google-auth-httplib2/0.1.0/compatibility-slim/0.0.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/google-auth-httplib2/0.1.0/confidence-slim/0.0.4)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>GoogleCloudPlatform/google-auth-library-python-httplib2</summary>

### [`v0.1.0`](https://togithub.com/GoogleCloudPlatform/google-auth-library-python-httplib2/blob/master/CHANGELOG.md#&#8203;010-httpswwwgithubcomgoogleapisgoogle-auth-library-python-httplib2comparev003v010-2021-03-01)

[Compare Source](https://togithub.com/GoogleCloudPlatform/google-auth-library-python-httplib2/compare/v0.0.4...v0.1.0)

##### Features

-   add close method ([#&#8203;14](https://www.github.com/googleapis/google-auth-library-python-httplib2/issues/14)) ([feda187](https://www.github.com/googleapis/google-auth-library-python-httplib2/commit/feda187133beeb656fdd7f30ed124ed1e428a74a))
-   expose a few httplib2 properties and a method ([#&#8203;9](https://www.github.com/googleapis/google-auth-library-python-httplib2/issues/9)) ([e3aa44e](https://www.github.com/googleapis/google-auth-library-python-httplib2/commit/e3aa44e01e2987989671467c7a022ea33829eb2f))

</details>

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language/snippets/api/requirements.txt

@@ -1,3 +1,3 @@
 google-api-python-client==1.12.8
 google-auth==1.27.0
-google-auth-httplib2==0.0.4
+google-auth-httplib2==0.1.0