samples: tmf: psa: Increase timeout for psa_protected_storage_test

The test takes longer and requires its timeout to be increased
as in this commit.

Signed-off-by: Maciej Perkowski <[email protected]>

Author: PerMac

samples/tfm_integration/tfm_psa_test/sample.yaml

@@ -15,6 +15,6 @@ sample:
 tests:
   sample.tfm.psa_protected_storage_test:
     extra_args: "CONFIG_TFM_PSA_TEST_PROTECTED_STORAGE=y"
-    timeout: 100
+    timeout: 120
   sample.tfm.psa_internal_trusted_storage_test:
     extra_args: "CONFIG_TFM_PSA_TEST_INTERNAL_TRUSTED_STORAGE=y"