fix: changed the link to the switch blog page on ISO 15118-20

[tropxy]

Updated the link to the new blog page

EDIT: I had also to update and set another python version to setup that was not 3.10.0 as we were now getting this error during the code quality check:

Run actions/setup-python@v2
Version 3.[1](https://github.com/SwitchEV/iso15118/actions/runs/3637883251/jobs/6139456419#step:3:1)0.0 was not found in the local cache
Error: Version 3.10.0 with arch x[6](https://github.com/SwitchEV/iso15118/actions/runs/3637883251/jobs/6139456419#step:3:7)4 not found
The list of all available versions can be found here: https://raw.githubusercontent.com/actions/python-versions/main/versions-manifest.json