fix: enable rsync mkpath to be backwards compatible

[JamesIves]

Description

Check the available version of rsync, allowing older Ubuntu versions to continue to use the action.

Testing Instructions

N/A

Additional Notes

Closes #1753

[codecov]

Codecov Report

Attention: Patch coverage is 81.81818% with 2 lines in your changes missing coverage. Please review.

Project coverage is 93.14%. Comparing base (c12b755) to head (ee72ae1).
Report is 9 commits behind head on dev.

Files with missing lines	Patch %	Lines
src/util.ts	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1757      +/-   ##
==========================================
- Coverage   93.54%   93.14%   -0.41%     
==========================================
  Files           7        7              
  Lines         310      321      +11     
  Branches       86       88       +2     
==========================================
+ Hits          290      299       +9     
  Misses         20       20              
- Partials        0        2       +2     

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