Simplify heart beat loop logic

[andrewsayre]

Description:

Simplifies the try/except logic in the heart beat handler.

Related issue (if applicable): fixes #

Checklist:

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• Tests have been added/updated. No exclusions in .coveragerc permitted.
• README.MD updated (if necessary)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.84%. Comparing base (8ccb03f) to head (c333b42).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev      #92      +/-   ##
==========================================
+ Coverage   99.74%   99.84%   +0.10%     
==========================================
  Files          22       22              
  Lines        1976     1975       -1     
==========================================
+ Hits         1971     1972       +1     
+ Misses          5        3       -2     

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