Update gov cloud account number

[yangaws]

Issue #, if available:

Description of changes:
Update gov cloud account number and add related unit tests

Merge Checklist

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• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works (if appropriate)
• I have updated the changelog with a description of my changes (if appropriate)
• I have updated any necessary documentation (if appropriate)

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[ChoiByungWook]

Should this still be dev?

[yangaws]

Yep the release date is next week. We can submit final PR at that time.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@327dd1a). Click here to learn what that means.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master      #71   +/-   ##
=========================================
  Coverage          ?   92.23%           
=========================================
  Files             ?       52           
  Lines             ?     3115           
  Branches          ?       82           
=========================================
  Hits              ?     2873           
  Misses            ?      242           
  Partials          ?        0

Impacted Files	Coverage Δ
...gemaker/sparksdk/algorithms/ImageURIProvider.scala	96.87% <100%> (ø)

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