Simplify getChangelogEntry

[bluwy]

I copied the function from https://github.com/changesets/changesets/blob/eaea8a45aca36f2c87adf888e3a73cd2c3a9ee39/packages/release-utils/src/utils.ts#L33

Which I've updated for next in changesets/changesets#1962. This removes a ton of dependencies and slightly reduces our bundle size:

• Before: 1,227.77 kB
• After: 1,131.49 kB

We also don't have to update the deps (they're outdated). We could import this from @changesets/release-utils if we want, but the changes I made is in next. And I'm also not sure if we want to start using @changesets/release-utils here. So I went with the simple approach and copy the function to here.

I totally understand if we do not feel like doing this now. I feel that it's ok since we've added more tests for it, and it only affects the version PR description. But I'll leave it to you to see if we should do this now, or later.

[changeset-bot]

🦋 Changeset detected

Latest commit: 84bd40d

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@changesets/action	Patch

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[Andarist]

I'm not a fan of parsing this with regex 😬 but I guess, we can try... it gives me edge-case creeps though.

[bluwy]

Yeah I'm happy to revert if we get any reports. Since it affects the PR description only, I think it's relatively safe to test if this works and prep the same changes in core.