Update dependency boto3 to v1.9.67 (#2810)

This PR contains the following updates:

| Package | Update | Change | References |
|---|---|---|---|
| boto3 | patch | `==1.9.64` -> `==1.9.67` | [source](https://renovatebot.com/gh/boto/boto3) |

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### Release Notes

<details>
<summary>boto/boto3</summary>

### [`v1.9.67`](https://renovatebot.com/gh/boto/boto3/blob/master/CHANGELOG.rst#&#8203;1967)

[Compare Source](https://renovatebot.com/gh/boto/boto3/compare/1.9.66...1.9.67)

======

-   api-change:`quicksight`: [``botocore``] Update quicksight client to latest version
-   api-change:`ecr`: [``botocore``] Update ecr client to latest version

### [`v1.9.66`](https://renovatebot.com/gh/boto/boto3/blob/master/CHANGELOG.rst#&#8203;1966)

[Compare Source](https://renovatebot.com/gh/boto/boto3/compare/1.9.65...1.9.66)

======

-   api-change:`alexaforbusiness`: [``botocore``] Update alexaforbusiness client to latest version
-   api-change:`redshift`: [``botocore``] Update redshift client to latest version
-   api-change:`cloudformation`: [``botocore``] Update cloudformation client to latest version

### [`v1.9.65`](https://renovatebot.com/gh/boto/boto3/blob/master/CHANGELOG.rst#&#8203;1965)

[Compare Source](https://renovatebot.com/gh/boto/boto3/compare/1.9.64...1.9.65)

======

-   api-change:`organizations`: [``botocore``] Update organizations client to latest version
-   api-change:`pinpoint-email`: [``botocore``] Update pinpoint-email client to latest version

</details>

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Author: renovate[bot]

frozen_requirements.txt

@@ -33,7 +33,7 @@ azure-nspkg==3.0.2
 azure-storage==0.36.0
 bcrypt==3.1.4
 black==18.9b0
-boto3==1.9.64
+boto3==1.9.67
 botocore==1.12.64
 cached-property==1.5.1
 cachetools==2.1.0