SerialIOTest: UBSAN/ASAN and `DefineAttribute` /date?

For b10fd69ece7eeb619d12b9a43f8987c87e72e3b5, I saw the following test failure in `dev` after merge of an unrelated PR (#1279) 3 days ago:
```
/home/runner/work/openPMD-api/openPMD-api/test/SerialIOTest.cpp:5824: FAILED:
{Unknown expression after the reported line}
due to unexpected exception with message:
ERROR: attribute /date has been defined and its value cannot be changed, in
call to DefineAttribute

===============================================================================
test cases: 54 | 53 passed | 1 failed
assertions: 111212 | 111211 passed | 1 failed

-----------------------------------------------------
Suppressions used:
count bytes template
240 8400 adios_inq_var
-----------------------------------------------------
```

I will restart the test now, but wonder if something is off in that test?