Fix qcodes driver for qm-qua==1.2.1

[TheoLaudatQM]

Fix the OPX qcodes driver to be compatible with qm-qua 1.2.1 (apparently the serialized stream processing format change a bit compared to previous versions)

[github-actions]

Unit Test Results

413 tests   404 ✔️  45s ⏱️
    1 suites      9 💤
    1 files        0 ❌

Results for commit be39f04.

[yomach]

We need to add testing for that...
Is it now working on both 1.2.1 and 1.1.7?

[TheoLaudatQM]

Yes agree...
I just added a simple check if hasattr(gene.values[2].list_value.values[1], "list_value"): I think that before 1.2.1 we always had a list_value, but maybe for simplification, now we can have directly a string_value if there is nothing else after...