Add freeze_time decorator to test_compressible

[jonathangreen]

Description

I've seen the test_compressible test fail occasionally. Its always one byte off, and I think its because there is a timestamp that is getting compressed, and occasionally we cross a second boundary causing this test to fail.

Add the freeze_time decorator so that we don't have to worry about time in this test.

Motivation and Context

This test is failing right now in main: https://github.com/ThePalaceProject/circulation/actions/runs/10473254405/job/29004736627

How Has This Been Tested?

• Running tests

Checklist

• I have updated the documentation accordingly.
• All new and existing tests passed.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.63%. Comparing base (eb2dc69) to head (d6859b8).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1996      +/-   ##
==========================================
- Coverage   90.63%   90.63%   -0.01%     
==========================================
  Files         339      339              
  Lines       40210    40210              
  Branches     8702     8702              
==========================================
- Hits        36444    36443       -1     
- Misses       2493     2494       +1     
  Partials     1273     1273              

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[tdilauro]

👍🏽