docs: persist operator upgrade notes from #1035

[viscalyxbot]

This automated PR persists merged Operator Upgrade Impact notes under ## Unreleased.

• Latest source PR: Fail closed on shipped production authentication placeholders #1035
• Workflow run: https://github.com/viscalyx/Kravhantering/actions/runs/31939067768

Merge after the required checks pass.

Operator Upgrade Impact

• No operator notes needed.

SSDLC (Secure Software Development Life Cycle) Gate

• I have reviewed SSDLC requirements for this change and addressed any security, data protection, threat-model, and security-testing impacts.

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Run ID: 3c6031d3-755d-40bd-8723-15aded5a0419

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.87%. Comparing base (31a5a0e) to head (fc6a27e).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1036      +/-   ##
==========================================
- Coverage   87.87%   87.87%   -0.01%     
==========================================
  Files         680      680              
  Lines       40673    40673              
  Branches    12416    12416              
==========================================
- Hits        35741    35740       -1     
  Misses       2171     2171              
- Partials     2761     2762       +1     

Flag	Coverage Δ
combined	87.87% <ø> (-0.01%)	⬇️

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see 1 file with indirect coverage changes

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