Provide consolidated changelog for end-users

[Nevon]

What I'd like:
As a user of bottlerocket, I would like a simple way to understand what has changed between different versions of the OS. This used to be fairly simple by reading the release notes here on Github (example). But with the move of a lot of functionality out into bottlerocket-core-kit, twoliter etc. this is now harder for two reasons:

1. The actual changelog for each given package lives in its own repository, and the release notes don't link to that changelog.
2. The bottlerocket release notes for a given version don't tell you what version of for example twoliter it is changing from. Only what version it is changing to.

This means that today for example when I'm upgrading from 1.31.0 to 1.32.0 I have to have the release notes for both versions up, and for each dependency check what version it was in 1.31.0 and what version it is in 1.32.0 and then go through the release notes for each of those versions in each separate repository.

Given the close relationship between Bottlerocket the OS and bottlerocket-core-kit, twoliter etc. it would be really helpful if there was a way to get a consolidated changelog that for a given version of Bottlerocket shows what changes there were in the dependencies, not just that the new version is now X.

Any alternatives you've considered:

Bottlerocket.dev could provide this information. Today it just links to the github release page. It does also list all the versions of various packages, so it stands to reason that it could provide the changelog for those packages between the current version and the previous version. However, today the website [doesn't keep up to date with the OS releases](The website doesn't provide any release notes, and just links to the github release page of this repository, and the website doesn't keep up to date with OS versions anyway.).

A smaller but still helpful change would be if the release notes said "Update bottlerocket-core-kit from 5.4.1 to 5.4.2" and linked to the release notes of bottlerocket-core-kit 5.4.2. At least that would make it faster to do this review manually.