chore(deps): update dependency google-api-core to v2.1.1 (#1027)

[![WhiteSource Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [google-api-core](https://togithub.com/googleapis/python-api-core) | `==2.1.0` -> `==2.1.1` | [![age](https://badges.renovateapi.com/packages/pypi/google-api-core/2.1.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/google-api-core/2.1.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/google-api-core/2.1.1/compatibility-slim/2.1.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/google-api-core/2.1.1/confidence-slim/2.1.0)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>googleapis/python-api-core</summary>

### [`v2.1.1`](https://togithub.com/googleapis/python-api-core/blob/master/CHANGELOG.md#&#8203;211-httpswwwgithubcomgoogleapispython-api-corecomparev210v211-2021-10-13)

[Compare Source](https://togithub.com/googleapis/python-api-core/compare/v2.1.0...v2.1.1)

</details>

---

### Configuration

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

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

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

🔕 **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.

---

This PR has been generated by [WhiteSource Renovate](https://renovate.whitesourcesoftware.com). View repository job log [here](https://app.renovatebot.com/dashboard#github/googleapis/gapic-generator-python).

Author: renovate-bot

requirements.txt

@@ -1,5 +1,5 @@
 click==8.0.3
-google-api-core==2.1.0
+google-api-core==2.1.1
 googleapis-common-protos==1.53.0
 jinja2==3.0.2
 MarkupSafe==2.0.1