chore(deps): update dependency google-cloud-dataproc to v1.1.0 (#67)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [google-cloud-dataproc](https://togithub.com/googleapis/python-dataproc) | minor | `==1.0.1` -> `==1.1.0` |

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### Release Notes

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

### [`v1.1.0`](https://togithub.com/googleapis/python-dataproc/blob/master/CHANGELOG.md#&#8203;110-httpswwwgithubcomgoogleapispython-dataproccomparev101v110-2020-07-31)

[Compare Source](https://togithub.com/googleapis/python-dataproc/compare/v1.0.1...v1.1.0)

##### Features

-   add support for temp_bucket, endpoint_config in clusters; add preemptibility for instance group configs ([#&#8203;60](https://www.github.com/googleapis/python-dataproc/issues/60)) ([a80fc72](https://www.github.com/googleapis/python-dataproc/commit/a80fc727510c10c678caa125902c201c8280dcc1))

##### [1.0.1](https://www.github.com/googleapis/python-dataproc/compare/v1.0.0...v1.0.1) (2020-07-16)

##### Bug Fixes

-   correct protobuf type for diagnose_cluster, update retry configs ([#&#8203;55](https://www.github.com/googleapis/python-dataproc/issues/55)) ([822315e](https://www.github.com/googleapis/python-dataproc/commit/822315ec3f2517ebb6ca199b72156ebd50e0518b))

</details>

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dataproc/snippets/requirements.txt

@@ -3,4 +3,4 @@ google-auth==1.20.1
 google-auth-httplib2==0.0.4
 google-cloud==0.34.0
 google-cloud-storage==1.30.0
-google-cloud-dataproc==1.0.1
+google-cloud-dataproc==1.1.0