Hello! Feel free to open a merge request on Salsa for whatever change to want to have in the packaging. I wrote instructions with screenshots at https://wiki.debian.org/Teams/MySQL/patches so it would be as easy as possible to contribute.
I am also grateful for meta-contributions to the contribution process itself: the wiki texts, READMEs inside the packaging, gitlab-ci.yml tweaks to make the testing more extensive and reliable etc.