[FEATURE] Clean up python references in oss-fuzz

[cujomalainey]

Currently in OSS-fuzz we pull in the dead_snakes ppa so we can build zephyr (requires >= 3.10), this PR (google/oss-fuzz#12027) fixes that. Once it lands we can delete the ppa import.

[DaveLak]

google/oss-fuzz#12027 was merged 🙂

[lgirdwood]

@cujomalainey do we need any follow up PRs to close ?

[cujomalainey]

Yes, we should remove the dead snakes ppa workaround

[cujomalainey]

This can be closed out after google/oss-fuzz#12776 is merged