deps: update dependency com.google.auth:google-auth-library-bom to v0…

….22.0 (#171)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.auth:google-auth-library-bom](https://github.com/googleapis/google-auth-library-java) | minor | `0.21.1` -> `0.22.0` |

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### Release Notes

<details>
<summary>googleapis/google-auth-library-java</summary>

### [`v0.22.0`](https://github.com/googleapis/google-auth-library-java/blob/master/CHANGELOG.md#&#8203;0220-httpswwwgithubcomgoogleapisgoogle-auth-library-javacomparev0211v0220-2020-10-13)

[Compare Source](https://github.com/googleapis/google-auth-library-java/compare/v0.21.1...v0.22.0)

##### Features

-   add logging at FINE level for each step of ADC ([#&#8203;435](https://www.github.com/googleapis/google-auth-library-java/issues/435)) ([7d145b2](https://www.github.com/googleapis/google-auth-library-java/commit/7d145b2371033093ea13fd05520c90970a5ef363))

##### Documentation

-   remove bad javadoc tags ([#&#8203;478](https://www.github.com/googleapis/google-auth-library-java/issues/478)) ([a329c41](https://www.github.com/googleapis/google-auth-library-java/commit/a329c4171735c3d4ee574978e6c3742b96c01f74))

##### Dependencies

-   update dependency com.google.http-client:google-http-client-bom to v1.37.0 ([#&#8203;486](https://www.github.com/googleapis/google-auth-library-java/issues/486)) ([3027fbf](https://www.github.com/googleapis/google-auth-library-java/commit/3027fbfaf017f5aa5a22cc51cd38a522597729c0))

##### [0.21.1](https://www.github.com/googleapis/google-auth-library-java/compare/v0.21.0...v0.21.1) (2020-07-07)

##### Dependencies

-   update google-http-client to 1.36.0 ([#&#8203;447](https://www.github.com/googleapis/google-auth-library-java/issues/447)) ([b913d19](https://www.github.com/googleapis/google-auth-library-java/commit/b913d194259e4f93bb401a844480f56b48dad3bd)), closes [#&#8203;446](https://www.github.com/googleapis/google-auth-library-java/issues/446)

</details>

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pom.xml

@@ -62,7 +62,7 @@
     <google.api-common.version>1.10.0</google.api-common.version>
     <google.common-protos.version>1.18.1</google.common-protos.version>
     <google.core.version>1.93.9</google.core.version>
-    <google.auth.version>0.21.1</google.auth.version>
+    <google.auth.version>0.22.0</google.auth.version>
     <google.http-client.version>1.37.0</google.http-client.version>
     <google.api-client.version>1.30.11</google.api-client.version>
     <gson.version>2.8.6</gson.version>