DM-38769: Filter sqlite files from open files list.

[ktlim]

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (75593ea) 93.62% compared to head (e5d9c5b) 93.62%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #155   +/-   ##
=======================================
  Coverage   93.62%   93.62%           
=======================================
  Files          43       43           
  Lines        2698     2698           
=======================================
  Hits         2526     2526           
  Misses        172      172           

Impacted Files	Coverage Δ
python/lsst/utils/tests.py	76.78% <ø> (ø)

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