Disable astronomer update-check in flow env

[feluelle]

Description

Currently, when running flow in the astro-runtime image we continuously check for updates. This is not necessary for the flow environment.

Furthermore, the flow command will only be used locally hence when we deploy to astro (cloud) we will use a different image for running this workflow anyway.

🎟 Issue(s)

Related astronomer/astro-sdk#1286

📋 Checklist

• Rebased from the main (or release if patching) branch (before testing)
• Ran make test before taking out of draft
• Ran make lint before taking out of draft
• Added/updated applicable tests
• Tested against Astro-API (if necessary).
• Tested against Houston-API and Astronomer (if necessary).
• Communicated to/tagged owners of respective clients potentially impacted by these changes.
• Updated any related documentation

[codecov]

Codecov Report

Base: 87.28% // Head: 87.28% // No change to project coverage 👍

Coverage data is based on head (405282a) compared to base (e6b73ff).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #895   +/-   ##
=======================================
  Coverage   87.28%   87.28%           
=======================================
  Files         108      108           
  Lines        9317     9317           
=======================================
  Hits         8132     8132           
  Misses        697      697           
  Partials      488      488           

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