Merging v0.37 changes into master and marking v0.38.0 backward compatible.

[vishalchangrani]

1. Change from update to transit script pull command to download file if md5 of remote file is not known #6453
   git cherry-pick 0da27c1a74a96c8eafa0ca9c62adfe363d52f1ab

2. Change from Marking v0.37.18 as backward compatible in terms of script execution #6595
   git cherry-pick e8ac5d28bdabccd15be3a236ffbd2f068a70f323

3. Adding v0.38.0 as backward compatible

See slack message

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 41.16%. Comparing base (6bd6cab) to head (51d35cf).

Files with missing lines	Patch %	Lines
cmd/bootstrap/transit/cmd/pull.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6995      +/-   ##
==========================================
- Coverage   41.16%   41.16%   -0.01%     
==========================================
  Files        2131     2131              
  Lines      186913   186913              
==========================================
- Hits        76950    76939      -11     
- Misses     103527   103533       +6     
- Partials     6436     6441       +5     

Flag	Coverage Δ
unittests	41.16% <0.00%> (-0.01%)	⬇️

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