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…onfig to v0.6.0 (#47)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.cloud:google-cloud-shared-config](https://togithub.com/googleapis/java-shared-config) | minor | `0.5.0` -> `0.6.0` |

---

### Release Notes

<details>
<summary>googleapis/java-shared-config</summary>

### [`v0.6.0`](https://togithub.com/googleapis/java-shared-config/blob/master/CHANGELOG.md#&#8203;060-httpswwwgithubcomgoogleapisjava-shared-configcomparev050v060-2020-05-19)

[Compare Source](https://togithub.com/googleapis/java-shared-config/compare/v0.5.0...v0.6.0)

##### Features

-   add new configuration necessary to support auto-value ([#&#8203;136](https://www.github.com/googleapis/java-shared-config/issues/136)) ([c14689b](https://www.github.com/googleapis/java-shared-config/commit/c14689b8791c173687f719d73156a989aedd7ba6))

</details>

---

### Renovate configuration

:date: **Schedule**: At any time (no schedule defined).

:vertical_traffic_light: **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

:recycle: **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:no_bell: **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

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