chore: pin changelog-check workflow to safe commit to prevent breakages

[cryptodev-2s]

Explanation

This PR updates the changelog-check workflow to use commit 85fffce169c0fd35028ecde6b38dfb3f932882ec, which pins a safe version and prevents breaking changes in the shared workflow from affecting this repo. The change that adds this protection was introduced in this commit.

References

Changelog

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed, highlighting breaking changes as necessary
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes