tests: logging/dictionary: fix pytest log header regex

When doing device testing, there may be some other characters
being printed before the dictionary logging header string.
So change the regex to ignore those characters.

Fixes zephyrproject-rtos#75253

Signed-off-by: Daniel Leung <[email protected]>

tests/subsys/logging/dictionary/pytest/test_logging_dictionary.py

@@ -39,7 +39,7 @@ def process_logs(dut: DeviceAdapter, build_dir):
 
     # Read the encoded logs and save them to a file
     # as the log parser requires file as input
-    handler_output = dut.readlines_until(regex = '^##ZLOGV1##[0-9]+', timeout = 10.0)
+    handler_output = dut.readlines_until(regex = '.*##ZLOGV1##[0-9]+', timeout = 10.0)
 
     encoded_logs = handler_output[-1]