🔧 update renovate configuration

Description

Small tweaks to the renovate configuration to slighlty reduce the frequency of updates and enabling automerge for patch version updates.

[x] The pull request only contains commits that are related to it.
[x] I have added appropriate tests and documentation.
[x] I have made sure that all CI jobs on GitHub pass.
[x] The pull request introduces no new warnings and follows the project's style guidelines.