DPE-8975 Move PG16 K8s TLS tests to 1/stable

[taurus-forever]

Issue

Tests are using legacy and deprecated latest/stable which is going to be closed soon.

Solution

Migrate tests to up-2-date and supported channel 1/stable.

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 65.80%. Comparing base (cc58e87) to head (1a98a73).
⚠️ Report is 1 commits behind head on 16/edge.

❌ Your project status has failed because the head coverage (65.80%) is below the target coverage (70.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@           Coverage Diff            @@
##           16/edge    #1161   +/-   ##
========================================
  Coverage    65.80%   65.80%           
========================================
  Files           18       18           
  Lines         4068     4068           
  Branches       600      600           
========================================
  Hits          2677     2677           
  Misses        1189     1189           
  Partials       202      202           

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