PMM-13202 Fix double unlock.

[BupycHuk]

PMM-13202

Link to the Feature Build: SUBMODULES-3660

If this PR adds or removes or alters one or more API endpoints, please review and add or update the relevant API documents as well:

• API Docs updated

If this PR is related to some other PRs in this or other repositories, please provide links to those PRs:

• Links to related pull requests (optional).

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 10 lines in your changes missing coverage. Please review.

Project coverage is 44.62%. Comparing base (730ef71) to head (4a42403).
Report is 1 commits behind head on v3.

Files with missing lines	Patch %	Lines
managed/services/server/updater.go	0.00%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##               v3    #3068      +/-   ##
==========================================
- Coverage   44.63%   44.62%   -0.02%     
==========================================
  Files         357      357              
  Lines       35711    35719       +8     
==========================================
  Hits        15939    15939              
- Misses      18148    18155       +7     
- Partials     1624     1625       +1     

Flag	Coverage Δ
managed	46.68% <0.00%> (-0.02%)	⬇️

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