Bump boto3 from 1.18.61 to 1.19.6 (#69)

Bumps [boto3](https://github.com/boto/boto3) from 1.18.61 to 1.19.6.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/boto/boto3/blob/develop/CHANGELOG.rst">boto3's changelog</a>.</em></p>
<blockquote>
<h1>1.19.6</h1>
<ul>
<li>api-change:<code>gamelift</code>: [<code>botocore</code>] Added support for Arm-based AWS Graviton2 instances, such as M6g, C6g, and R6g.</li>
<li>api-change:<code>ecs</code>: [<code>botocore</code>] Amazon ECS now supports running Fargate tasks on Windows Operating Systems Families which includes Windows Server 2019 Core and Windows Server 2019 Full.</li>
<li>api-change:<code>sagemaker</code>: [<code>botocore</code>] This release adds support for RStudio on SageMaker.</li>
<li>api-change:<code>connectparticipant</code>: [<code>botocore</code>] This release adds a new boolean attribute - Connect Participant - to the CreateParticipantConnection API, which can be used to mark the participant as connected.</li>
<li>api-change:<code>ec2</code>: [<code>botocore</code>] Added new read-only DenyAllIGWTraffic network interface attribute. Added support for DL1 24xlarge instances powered by Habana Gaudi Accelerators for deep learning model training workloads</li>
<li>api-change:<code>ssm-incidents</code>: [<code>botocore</code>] Updating documentation, adding new field to ConflictException to indicate earliest retry timestamp for some operations, increase maximum length of nextToken fields</li>
</ul>
<h1>1.19.5</h1>
<ul>
<li>api-change:<code>autoscaling</code>: [<code>botocore</code>] This release adds support for attribute-based instance type selection, a new EC2 Auto Scaling feature that lets customers express their instance requirements as a set of attributes, such as vCPU, memory, and storage.</li>
<li>api-change:<code>ec2</code>: [<code>botocore</code>] This release adds: attribute-based instance type selection for EC2 Fleet, Spot Fleet, a feature that lets customers express instance requirements as attributes like vCPU, memory, and storage; and Spot placement score, a feature that helps customers identify an optimal location to run Spot workloads.</li>
<li>enhancement:Session: Added <code>get_partition_for_region</code> to lookup partition for a given region_name</li>
<li>api-change:<code>eks</code>: [<code>botocore</code>] EKS managed node groups now support BOTTLEROCKET_x86_64 and BOTTLEROCKET_ARM_64 AMI types.</li>
<li>api-change:<code>sagemaker</code>: [<code>botocore</code>] This release allows customers to describe one or more versioned model packages through BatchDescribeModelPackage, update project via UpdateProject, modify and read customer metadata properties using Create, Update and Describe ModelPackage and enables cross account registration of model packages.</li>
<li>enhancement:Session: [<code>botocore</code>] Added <code>get_partition_for_region</code> allowing partition lookup by region name.</li>
<li>api-change:<code>textract</code>: [<code>botocore</code>] This release adds support for asynchronously analyzing invoice and receipt documents through two new APIs: StartExpenseAnalysis and GetExpenseAnalysis</li>
<li>enchancement:<code>s3</code>: TransferConfig now supports the <code>max_bandwidth</code> argument.</li>
</ul>
<h1>1.19.4</h1>
<ul>
<li>api-change:<code>emr-containers</code>: [<code>botocore</code>] This feature enables auto-generation of certificate  to secure the managed-endpoint and removes the need for customer provided certificate-arn during managed-endpoint setup.</li>
<li>api-change:<code>chime-sdk-messaging</code>: [<code>botocore</code>] The Amazon Chime SDK now supports push notifications through Amazon Pinpoint</li>
<li>api-change:<code>chime-sdk-identity</code>: [<code>botocore</code>] The Amazon Chime SDK now supports push notifications through Amazon Pinpoint</li>
</ul>
<h1>1.19.3</h1>
<ul>
<li>api-change:<code>rds</code>: [<code>botocore</code>] This release adds support for Amazon RDS Custom, which is a new RDS management type that gives you full access to your database and operating system. For more information, see <a href="https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/rds-custom.html">https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/rds-custom.html</a></li>
<li>api-change:<code>auditmanager</code>: [<code>botocore</code>] This release introduces a new feature for Audit Manager: Custom framework sharing. You can now share your custom frameworks with another AWS account, or replicate them into another AWS Region under your own account.</li>
<li>api-change:<code>ec2</code>: [<code>botocore</code>] This release adds support to create a VPN Connection that is not attached to a Gateway at the time of creation. Use this to create VPNs associated with Core Networks, or modify your VPN and attach a gateway using the modify API after creation.</li>
<li>api-change:<code>route53resolver</code>: [<code>botocore</code>] New API for ResolverConfig, which allows autodefined rules for reverse DNS resolution to be disabled for a VPC</li>
</ul>
<h1>1.19.2</h1>
<ul>
<li>api-change:<code>quicksight</code>: [<code>botocore</code>] Added QSearchBar option for GenerateEmbedUrlForRegisteredUser ExperienceConfiguration to support Q search bar embedding</li>
<li>api-change:<code>auditmanager</code>: [<code>botocore</code>] This release introduces character restrictions for ControlSet names. We updated regex patterns for the following attributes: ControlSet, CreateAssessmentFrameworkControlSet, and UpdateAssessmentFrameworkControlSet.</li>
<li>api-change:<code>chime</code>: [<code>botocore</code>] Chime VoiceConnector and VoiceConnectorGroup APIs will now return an ARN.</li>
</ul>
<p>1.19.1</p>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/boto/boto3/commit/4e94e9958fb561e4e4a2f40a5dc1f630b95b294c"><code>4e94e99</code></a> Merge branch 'release-1.19.6'</li>
<li><a href="https://github.com/boto/boto3/commit/43a80764bfdd038a1babbe6cbeeb2a8d9403f2ea"><code>43a8076</code></a> Bumping version to 1.19.6</li>
<li><a href="https://github.com/boto/boto3/commit/27de20542fbdfba4204c2be8832430bab88ba1bf"><code>27de205</code></a> Add changelog entries from botocore</li>
<li><a href="https://github.com/boto/boto3/commit/527297d86fe511bcea040ae73376fbcd73dd48d3"><code>527297d</code></a> Merge branch 'release-1.19.5'</li>
<li><a href="https://github.com/boto/boto3/commit/e25b8897b5d440d047f65bc2504bd301eba7d573"><code>e25b889</code></a> Merge branch 'release-1.19.5' into develop</li>
<li><a href="https://github.com/boto/boto3/commit/6967a2daba139a6a1257e9c538a2eef88171be85"><code>6967a2d</code></a> Bumping version to 1.19.5</li>
<li><a href="https://github.com/boto/boto3/commit/5d20ca08534253e654b34d71f14aa18cb6a9571a"><code>5d20ca0</code></a> Add changelog entries from botocore</li>
<li><a href="https://github.com/boto/boto3/commit/371f6d363a494acc0106a4122eb9b5128c90b7bc"><code>371f6d3</code></a> Add get_partition_for_region to Session (<a href="https://github-redirect.dependabot.com/boto/boto3/issues/3060">#3060</a>)</li>
<li><a href="https://github.com/boto/boto3/commit/c5487b57499ad354e24ca2c8622f90fe089240b6"><code>c5487b5</code></a> Add max_bandwidth to TransferConfig (<a href="https://github-redirect.dependabot.com/boto/boto3/issues/3059">#3059</a>)</li>
<li><a href="https://github.com/boto/boto3/commit/a426ea06e1cef0477d429dfa7d410de21f162319"><code>a426ea0</code></a> Merge branch 'release-1.19.4'</li>
<li>Additional commits viewable in <a href="https://github.com/boto/boto3/compare/1.18.61...1.19.6">compare view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=boto3&package-manager=pip&previous-version=1.18.61&new-version=1.19.6)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge and block automerging
- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
- `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)


</details>