tests: on_target: fix fota app version

Fix for wrong binary file.

Signed-off-by: Giacomo Dematteis <giacomo.dematteis@nordicsemi.no>

Author: DematteisGiacomo

tests/on_target/artifacts/stable_version_jan_2025-update-signed.bin

@@ -18,7 +18,7 @@
 MFW_202_FILEPATH = "artifacts/mfw_nrf91x1_2.0.2.zip"
 
 # Stable version used for testing
-TEST_APP_VERSION = "foo"
+TEST_APP_VERSION = "0.0.0-foo"
 TEST_APP_BIN = "artifacts/stable_version_jan_2025-update-signed.bin"
 
 DELTA_MFW_BUNDLEID = "59cec896-c842-40fe-9a95-a4f3e88a4cdb"
@@ -183,8 +183,9 @@ def _run_fota(bundle_id="", fota_type="app", fotatimeout=APP_FOTA_TIMEOUT, new_v
                     "modemFirmware",
                     DEVICE_MSG_TIMEOUT
                 )
-        except RuntimeError:
+        except RuntimeError as e:
             logger.error(f"Version is not {new_version} after {DEVICE_MSG_TIMEOUT}s")
+            raise e
 
     return _run_fota