Revert "DPE-8395 Remove old revision of Juju Secret (#1195)"

[marceloneppel]

This reverts commit 27c5225 to avoid issues until we can properly test the charm on Juju 3.6.11.

Checklist

• I have added or updated any relevant documentation.
• I have cleaned any remaining cloud resources from my accounts.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.77%. Comparing base (5870ee7) to head (14cb47e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1216      +/-   ##
==========================================
+ Coverage   75.73%   75.77%   +0.04%     
==========================================
  Files          16       16              
  Lines        4170     4165       -5     
  Branches      629      629              
==========================================
- Hits         3158     3156       -2     
+ Misses        792      789       -3     
  Partials      220      220              

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