fix: use human-readable secret key for local OAB

[hsiliev]

Replace hashed secret key with human readable one

Solves: PZ-5706

[github-actions]

unit-test-results

 86 files  ±0  124 suites  ±0   1m 42s ⏱️ -1s
475 tests ±0  474 ✅ ±0  1 💤 ±0  0 ❌ ±0 
579 runs  ±0  577 ✅ ±0  2 💤 ±0  0 ❌ ±0 

Results for commit 7809e08. ± Comparison against base commit 97fde12.

[github-actions]

integration-test-results

 31 files  ±0   31 suites  ±0   41s ⏱️ ±0s
114 tests ±0  114 ✅ ±0  0 💤 ±0  0 ❌ ±0 
127 runs  ±0  127 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 7809e08. ± Comparison against base commit 97fde12.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 42.18%. Comparing base (97fde12) to head (7809e08).
Report is 4 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #2793   +/-   ##
=========================================
  Coverage     42.18%   42.18%           
  Complexity     3479     3479           
=========================================
  Files          1334     1334           
  Lines         32258    32258           
  Branches       2975     2975           
=========================================
  Hits          13608    13608           
  Misses        17829    17829           
  Partials        821      821           

Flag	Coverage Δ
integrationtests	51.41% <ø> (ø)
unittests	28.19% <ø> (ø)

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