[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 | | :------: | :-------------------- | :---- | :--------------- | |  | **400** | 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** | Use After Free
[SNYK-ALPINE316-EXPAT-3062883](https://snyk.io/vuln/SNYK-ALPINE316-EXPAT-3062883) | No Known Exploit | |  | **400** | Integer Overflow or Wraparound
[SNYK-ALPINE316-KRB5-3136432](https://snyk.io/vuln/SNYK-ALPINE316-KRB5-3136432) | No Known Exploit | |  | **400** | Double Free
[SNYK-ALPINE316-OPENSSL-3314624](https://snyk.io/vuln/SNYK-ALPINE316-OPENSSL-3314624) | 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":"7bc6fa81-359d-427e-8eb7-b153e4fa49f5","prPublicId":"7bc6fa81-359d-427e-8eb7-b153e4fa49f5","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-E2FSPROGS-3339843","SNYK-ALPINE316-EXPAT-3028183","SNYK-ALPINE316-EXPAT-3062883","SNYK-ALPINE316-KRB5-3136432","SNYK-ALPINE316-OPENSSL-3314624"],"upgrade":["SNYK-ALPINE316-E2FSPROGS-3339843","SNYK-ALPINE316-EXPAT-3028183","SNYK-ALPINE316-EXPAT-3062883","SNYK-ALPINE316-KRB5-3136432","SNYK-ALPINE316-OPENSSL-3314624"],"isBreakingChange":false,"env":"prod","prType":"fix","templateVariants":["updated-fix-title","priorityScore"],"priorityScoreList":[400,400,400,400,400],"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.