Unexpected Updated dependencies changelog

[johnameyer]

Affected Packages

@changesets/cli/changelog
@changesets/changelog-github

Problem

Changelog and Github PR description generation seem to have some duplication / incorrect behavior with the "Updated dependencies" changelog generation

When generating changelogs and publish PR off of two commits touching a core package and the packages that depend off of it:

• 6464b83 - patching all packages - including a minor package.json script change
• 2510048 - updating dependencies

The PR unexpectedly called out 6464b83 twice for updating dependencies despite it not changing these:

6464b83: Fix max score defaulting to 100 and remove quickEnd
Updated dependencies [6464b83]
Updated dependencies [2510048]
Updated dependencies [6464b83]
  @cards-ts/core@0.7.0

Replication:

git clone github.com/johnameyer/cards-ts cards-ts
cd $_
git reset --hard 6464b83bc5e49028f1cc26adf344419bd4c3ced0
pnpm i
pnpm changeset version
grep -E "6464b83|2510048|$" packages/hearts/CHANGELOG.md
# See that "Updated dependencies" are printed multiple times with @changesets/cli/changelog
# See that 6464b83 is printed multiple times with @changesets/changelog-github

Proposed solution

For @changesets/cli/changelog:

Combine all "Updated dependencies" lines into a single message

For @changesets/changelog-github:

De-duplicate multiple commit hashes

For both:

Only output if actually changing external dependencies of a package (if a workspace dependency then give the option to exclude)