Update lambda detector to use bytes instead of MB

[akats7]

Fixes: #7591

[flc1125]

There is a conflict that needs to be resolved.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (main@3ce1050). Learn more about missing BASE report.
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff           @@
##             main   #7745   +/-   ##
======================================
  Coverage        ?   79.0%           
======================================
  Files           ?     186           
  Lines           ?   14871           
  Branches        ?       0           
======================================
  Hits            ?   11751           
  Misses          ?    2780           
  Partials        ?     340           

Files with missing lines	Coverage Δ
detectors/aws/lambda/detector.go	92.8% <100.0%> (ø)

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