tests: subsys: jwt: libraries.encoding.jwt.rsa.psa fails

[katgiadla]

Describe the bug
The test tests/subsys/jwt/libraries.encoding.jwt.rsa.psa fails

Observed for:

• nrf5340dk/nrf5340/cpuapp/ns
• nrf9160dk/nrf9160/ns

To Reproduce
Steps to reproduce the behavior:

1. have nrf9160dk/nrf9160/ns connected
2. go to your zephyr dir
3. call ./scripts/twister -T tests/subsys/jwt -p nrf9160dk/nrf9160/ns --device-testing --device-serial /dev/ttyACM0 -v --inline-logs --west-flash="--erase"
4. See console output with error

Expected behavior
Valid console output

Impact
Not clear

Logs and console output

*** Booting Zephyr OS build v3.7.0-4339-g1ec5ce05f9f8 ***
Running TESTSUITE jwt_tests
===================================================================
START - test_jwt

    Assertion failed at zephyr/tests/subsys/jwt/src/main.c:48: jwt_tests_test_jwt: (res not equal to 0)
Signing payload
 FAIL - test_jwt in 0.022 seconds
===================================================================
TESTSUITE jwt_tests failed.

------ TESTSUITE SUMMARY START ------

SUITE FAIL -   0.00% [jwt_tests]: pass = 0, fail = 1, skip = 0, total = 1 duration = 0.022 seconds
 - FAIL - [jwt_tests.test_jwt] duration = 0.022 seconds

------ TESTSUITE SUMMARY END ------

===================================================================
RunID: 8cf83447ecd64014499884f8a73d7731
PROJECT EXECUTION FAILED

Environment (please complete the following information):

• OS: Ubuntu 20.04.1 LTS
• Toolchain Zephyr SDK 0.16.8
• Commit SHA or Version used: v3.7.0-4232-g9b5260de9a31

Additional context
Probably introduced by 29e82d2