[DEMO] chore: Bump flask-base to test Flask 2.3.3

[petesfrench]

Done

• [List of work items including drive-bys - remember to add the why and what of this work.]

QA

• Check out this feature branch
• Run the site using the command ./run serve or dotrun
• View the site locally in your web browser at: http://0.0.0.0:8001/
  • Be sure to test on mobile, tablet and desktop screen sizes
• [List additional steps to QA the new features or prove the bug has been resolved]

Issue / Card

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