[Snyk] Security upgrade python from 3.9.13-alpine to 3.12.0a6-alpine

[cisagovbot]

This PR was automatically created by Snyk using the credentials of a real user.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image. #### Changes included in this PR - Dockerfile We recommend upgrading to `python:3.12.0a6-alpine`, as this image has only 0 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected. Some of the most important vulnerabilities in your base image include: | Severity | Priority Score / 1000 | Issue | Exploit Maturity | | :------: | :-------------------- | :---- | :--------------- | |  | **471** | Out-of-bounds Read
[SNYK-ALPINE316-E2FSPROGS-3339843](https://snyk.io/vuln/SNYK-ALPINE316-E2FSPROGS-3339843) | No Known Exploit | |  | **400** | Use After Free
[SNYK-ALPINE316-EXPAT-3028183](https://snyk.io/vuln/SNYK-ALPINE316-EXPAT-3028183) | No Known Exploit | |  | **400** | Access of Resource Using Incompatible Type ('Type Confusion')
[SNYK-ALPINE316-OPENSSL-3314641](https://snyk.io/vuln/SNYK-ALPINE316-OPENSSL-3314641) | No Known Exploit | |  | **511** | Use After Free
[SNYK-ALPINE316-OPENSSL-3314643](https://snyk.io/vuln/SNYK-ALPINE316-OPENSSL-3314643) | No Known Exploit | |  | **511** | Use After Free
[SNYK-ALPINE316-OPENSSL-3314643](https://snyk.io/vuln/SNYK-ALPINE316-OPENSSL-3314643) | No Known Exploit | --- **Note:** _You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs._ For more information: 🧐 [View latest project report](https://app.snyk.io/org/cisagov/project/61f16888-cee9-4a8f-b168-a2905bbeba2f?utm_source=github&utm_medium=referral&page=fix-pr) 🛠 [Adjust project settings](https://app.snyk.io/org/cisagov/project/61f16888-cee9-4a8f-b168-a2905bbeba2f?utm_source=github&utm_medium=referral&page=fix-pr/settings) [//]: # 'snyk:metadata:{"prId":"b004756e-f032-4a9f-9053-1de36d6a8a36","prPublicId":"b004756e-f032-4a9f-9053-1de36d6a8a36","dependencies":[{"name":"python","from":"3.9.13-alpine","to":"3.12.0a6-alpine"}],"packageManager":"dockerfile","projectPublicId":"61f16888-cee9-4a8f-b168-a2905bbeba2f","projectUrl":"https://app.snyk.io/org/cisagov/project/61f16888-cee9-4a8f-b168-a2905bbeba2f?utm_source=github&utm_medium=referral&page=fix-pr","type":"auto","patch":[],"vulns":["SNYK-ALPINE316-OPENSSL-3314643","SNYK-ALPINE316-E2FSPROGS-3339843","SNYK-ALPINE316-OPENSSL-3314641","SNYK-ALPINE316-EXPAT-3028183"],"upgrade":["SNYK-ALPINE316-E2FSPROGS-3339843","SNYK-ALPINE316-EXPAT-3028183","SNYK-ALPINE316-OPENSSL-3314641","SNYK-ALPINE316-OPENSSL-3314643","SNYK-ALPINE316-OPENSSL-3314643"],"isBreakingChange":false,"env":"prod","prType":"fix","templateVariants":["updated-fix-title","priorityScore"],"priorityScoreList":[511,471,400,400],"remediationStrategy":"vuln"}' --- **Learn how to fix vulnerabilities with free interactive lessons:** 🦉 [Learn about vulnerability in an interactive lesson of Snyk Learn.](https://learn.snyk.io/?loc=fix-pr)

[mcdonnnj]

Snyk has been removed from the organization.