Decode or repr bytes to void BytesWarning
Decode or repr bytes to void BytesWarning

`log_entry.data` and `log_entry.response_body` can be bytes.

Seen in tests:
corehq.apps.app_manager.tests.test_repeater:TestAppStructureRepeater.test_repeat_record_created
corehq.apps.zapier.tests.test_zapier_forwarding:TestZapierCaseForwarding.test_change_case_forwarding
corehq.motech.repeaters.tests.test_repeater:LocationRepeaterTest.test_trigger

dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq