Retag test

Author: msimacek

graalpython/com.oracle.graal.python.test/src/tests/unittest_tags/test_traceback.txt

@@ -47,6 +47,7 @@
 *graalpython.lib-python.3.test.test_traceback.TracebackCases.test_bad_indentation
 *graalpython.lib-python.3.test.test_traceback.TracebackCases.test_base_exception
 *graalpython.lib-python.3.test.test_traceback.TracebackCases.test_caret
+*graalpython.lib-python.3.test.test_traceback.TracebackCases.test_encoded_file
 *graalpython.lib-python.3.test.test_traceback.TracebackCases.test_format_exception_only_bad__str__
 *graalpython.lib-python.3.test.test_traceback.TracebackCases.test_nocaret
 *graalpython.lib-python.3.test.test_traceback.TracebackCases.test_print_exception