fix: Ensure elt/run log file is closed

[edgarrmondragon]

Fixes this warning:

ResourceWarning: Enable tracemalloc to get the object allocation traceback
/meltano/meltano-cloud/src/meltano/core/logging/output_logger.py:217: ResourceWarning: unclosed file <_io.TextIOWrapper name='/project/.meltano/logs/elt/prodtap-getpocket-to-target-jsonl/12701452-91c4-4b2b-928c-943cc1e271fa/elt.log' mode='a' encoding='UTF-8'>
  logger.removeHandler(self.redirect_log_handler)

https://docs.python.org/3/library/logging.handlers.html#logging.FileHandler

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[codecov]

Codecov Report

Merging #8043 (5693ffe) into main (5232005) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #8043   +/-   ##
=======================================
  Coverage   89.54%   89.54%           
=======================================
  Files         297      297           
  Lines       21924    21924           
  Branches     2446     2446           
=======================================
  Hits        19632    19632           
  Misses       1936     1936           
  Partials      356      356           

Files Changed	Coverage Δ
src/meltano/core/logging/output_logger.py	100.00% <100.00%> (ø)

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