fix!: introduce v4 provider migration code (backport #1762) #1767
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Epochs code changes the paramaters store, so the new parameter needs to be added to the store via a migration.
Had v4.0.0 and v4.1.0 stayed the same consensus version, provider chains using v4.0.0 would panic when migrating to v4.1.0 because of the missing migration.
To mitigate this issue provider consensus version got bumped to
4
and the migration code was refactored to introduce thev4
migration.This is an automatic backport of pull request #1762 done by [Mergify](https://mergify.com).