Theme build fails and hangs without the lockfile: pin bootstrap-borders-utilities 1.0.2 and stylelint-prettier 5.0.3

Problem/Motivation

Theme build on 1.0.x runs into the 30-minute timeout since #3635689 (job 13477880). Without the lockfile, two dependencies now resolve to broken releases:

• bootstrap-borders-utilities ^1.0.2 resolves 1.0.8, which does not ship utilities/scss/border-color-variants.scss and pulls gulp 4 and stylelint 13 in as runtime dependencies. Sass fails at scss/base/bootstrap.base.scss:69. npm's latest is still 1.0.2.
• stylelint-prettier ^5.0.2 resolves 5.1.0 (published 8 November 2026). stylelint --fix on the compiled bootstrap.base.css takes 6 seconds with 5.0.3 and does not finish in 150 seconds with 5.1.0. This is the step that hangs.

The build scripts chain with ;, so the failed Sass compile never failed the job: MR pipeline 1033896 passed with the same error in its log.

Steps to reproduce

On 1.0.x with no lockfile, in node:24: yarn install, then yarn theme:full-build.

Proposed resolution

• Pin bootstrap-borders-utilities to 1.0.2 and stylelint-prettier to 5.0.3, the versions the last lockfile had.
• Chain the build scripts with &&, so a failed compile fails the job.

Remaining tasks

• ✅ File an issue
• ✅ Addition/Change/Update/Fix
• ✅ Testing to ensure no regression
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support
• ➖ User Guide Documentation support
• ➖ UX/UI designer responsibilities
• ➖ Accessibility and Readability
• ❌ Reviewed by a human
• ❌ Code review by maintainers
• ❌ Full testing and approval
• ❌ Credit contributors
• ❌ Review with the product owner
• ✅ Update Release Notes
• ✅ Release

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• Fixed the theme build after the move to Node.js 24 without a lockfile.

AI-Generated: Yes