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 65.91%. Comparing base (6bb4c2b) to head (c284523).

❌ Your project check has failed because the head coverage (65.91%) 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    65.91%   65.91%           
========================================
  Files           18       18           
  Lines         4060     4060           
  Branches       598      598           
========================================
  Hits          2676     2676           
  Misses        1182     1182           
  Partials       202      202           

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