Include tests requiring git lfs in CI pipeline

[backmari]

Description of work:

• stop skipping tests with the marker datarepo
• cache the files in the test data submodule
• update dead-time correction gold values that changed due to Fix dead time at 30 Hz #102
• skip test depending on the data repo that only fails in the CI pipeline (defect created: EWM7743)

Verified that the git lfs files are successfully loaded from the cache:

Check all that apply:

• added release notes
  (if not, provide an explanation in the work description)
• updated documentation
• Source added/refactored
• Added unit tests
• Added integration tests
• Verified that tests requiring the /SNS and /HFIR filesystems pass without fail

References:

• Links to IBM EWM items:
• Links to related issues or pull requests:

Manual test for the reviewer

(instructions to set up the environment)

Check list for the reviewer

• release notes updated,
  or an explanation is provided as to why release notes are unnecessary
• best software practices
  • clearly named variables (better to be verbose in variable names)
  • code comments explaining the intent of code blocks
• All the tests are passing
• The documentation is up to date
• code comments added when explaining intent

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.57%. Comparing base (71eaf39) to head (cc73cb9).
Report is 1 commits behind head on next.

Additional details and impacted files

@@             Coverage Diff             @@
##             next     #106       +/-   ##
===========================================
+ Coverage   45.11%   58.57%   +13.45%     
===========================================
  Files          33       33               
  Lines        6330     6330               
===========================================
+ Hits         2856     3708      +852     
+ Misses       3474     2622      -852     

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[jmborr]

@backmari please update the release notes