chore(deps): update dependency google-cloud-bigquery to v2.2.0 (#333)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [google-cloud-bigquery](https://togithub.com/googleapis/python-bigquery) | minor | `==2.1.0` -> `==2.2.0` |

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### Release Notes

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

### [`v2.2.0`](https://togithub.com/googleapis/python-bigquery/blob/master/CHANGELOG.md#&#8203;220-httpswwwgithubcomgoogleapispython-bigquerycomparev210v220-2020-10-19)

[Compare Source](https://togithub.com/googleapis/python-bigquery/compare/v2.1.0...v2.2.0)

##### Features

-   add method api_repr for table list item ([#&#8203;299](https://www.github.com/googleapis/python-bigquery/issues/299)) ([07c70f0](https://www.github.com/googleapis/python-bigquery/commit/07c70f0292f9212f0c968cd5c9206e8b0409c0da))
-   add support for listing arima, automl, boosted tree, DNN, and matrix factorization models ([#&#8203;328](https://www.github.com/googleapis/python-bigquery/issues/328)) ([502a092](https://www.github.com/googleapis/python-bigquery/commit/502a0926018abf058cb84bd18043c25eba15a2cc))
-   add timeout paramter to load_table_from_file and it dependent methods ([#&#8203;327](https://www.github.com/googleapis/python-bigquery/issues/327)) ([b0dd892](https://www.github.com/googleapis/python-bigquery/commit/b0dd892176e31ac25fddd15554b5bfa054299d4d))
-   add to_api_repr method to Model ([#&#8203;326](https://www.github.com/googleapis/python-bigquery/issues/326)) ([fb401bd](https://www.github.com/googleapis/python-bigquery/commit/fb401bd94477323bba68cf252dd88166495daf54))
-   allow client options to be set in magics context ([#&#8203;322](https://www.github.com/googleapis/python-bigquery/issues/322)) ([5178b55](https://www.github.com/googleapis/python-bigquery/commit/5178b55682f5e264bfc082cde26acb1fdc953a18))

##### Bug Fixes

-   make TimePartitioning repr evaluable ([#&#8203;110](https://www.github.com/googleapis/python-bigquery/issues/110)) ([20f473b](https://www.github.com/googleapis/python-bigquery/commit/20f473bfff5ae98377f5d9cdf18bfe5554d86ff4)), closes [#&#8203;109](https://www.github.com/googleapis/python-bigquery/issues/109)
-   use version.py instead of pkg_resources.get_distribution ([#&#8203;307](https://www.github.com/googleapis/python-bigquery/issues/307)) ([b8f502b](https://www.github.com/googleapis/python-bigquery/commit/b8f502b14f21d1815697e4d57cf1225dfb4a7c5e))

##### Performance Improvements

-   add size parameter for load table from dataframe and json methods ([#&#8203;280](https://www.github.com/googleapis/python-bigquery/issues/280)) ([3be78b7](https://www.github.com/googleapis/python-bigquery/commit/3be78b737add7111e24e912cd02fc6df75a07de6))

##### Documentation

-   update clustering field docstrings ([#&#8203;286](https://www.github.com/googleapis/python-bigquery/issues/286)) ([5ea1ece](https://www.github.com/googleapis/python-bigquery/commit/5ea1ece2d911cdd1f3d9549ee01559ce8ed8269a)), closes [#&#8203;285](https://www.github.com/googleapis/python-bigquery/issues/285)
-   update snippets samples to support version 2.0 ([#&#8203;309](https://www.github.com/googleapis/python-bigquery/issues/309)) ([61634be](https://www.github.com/googleapis/python-bigquery/commit/61634be9bf9e3df7589fc1bfdbda87288859bb13))

##### Dependencies

-   add protobuf dependency ([#&#8203;306](https://www.github.com/googleapis/python-bigquery/issues/306)) ([cebb5e0](https://www.github.com/googleapis/python-bigquery/commit/cebb5e0e911e8c9059bc8c9e7fce4440e518bff3)), closes [#&#8203;305](https://www.github.com/googleapis/python-bigquery/issues/305)
-   require pyarrow for pandas support ([#&#8203;314](https://www.github.com/googleapis/python-bigquery/issues/314)) ([801e4c0](https://www.github.com/googleapis/python-bigquery/commit/801e4c0574b7e421aa3a28cafec6fd6bcce940dd)), closes [#&#8203;265](https://www.github.com/googleapis/python-bigquery/issues/265)

</details>

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samples/snippets/requirements.txt

@@ -1,4 +1,4 @@
-google-cloud-bigquery==2.1.0
+google-cloud-bigquery==2.2.0
 google-cloud-bigquery-storage==2.0.1
 google-auth-oauthlib==0.4.2
 grpcio==1.33.2