ci: bump dependency-changesets-action to v1.2.4

[insipx]

Problem

The Renovate Changeset workflow has been failing on every Renovate PR (e.g. run on #77):

Error: Input required and not supplied: use-semantic-commits

The previous pin 5d4104fd (labeled # v1.0.5) actually resolved to a 2023 commit where the action still required the old use-semantic-commits input. The tag-deref that produced that SHA in #66 was wrong — that commit predates the use-semantic-commits → use-conventional-commits rename, so passing use-conventional-commits didn't satisfy the required-input check.

Fix

Bump to v1.2.4 (latest), pinned to its real commit SHA f96232368519695969bea8a8cfff7cca32b1e56a (verified by dereferencing the annotated tag → commit dated 2026-03-28).

At v1.2.4:

• use-conventional-commits is the real input; use-semantic-commits is required: false (no error)
• using: node24 — also clears the Node 20 deprecation warning the run flagged

SHA-pin (not floating tag) is retained for the supply-chain reason from #66.

🤖 Generated with Claude Code

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Note

Bump dependency-changesets-action to v1.2.4 in renovate-changeset workflow

Updates the pinned commit for mscharley/dependency-changesets-action in renovate-changeset.yml from v1.0.5 (5d4104f) to v1.2.4 (f962323).

^{Macroscope summarized d57210b.}

[macroscopeapp]

Approvability

Verdict: Approved

This PR bumps a GitHub Actions dependency version in a CI workflow file, with the action remaining pinned to a commit SHA for security. The change doesn't affect production behavior and is a routine maintenance update.

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