User Story:

The current yarn version, Yarn 3.4.1, is failing build steps on non-x64 architectures, specifically s390x (IBM Z) and ppc64le (IBM Power).

The primary root cause for this is a known bug in Yarn 3.x related to Big-Endian support (which affects s390x) where the runtime assumes a Little-Endian system, leading to internal errors 

npm notice To update run: npm install -g npm@11.6.0 npm notice Preparing yarn@3.4.1 for immediate activation... Internal Error: Execution failed with a non-error rejection (rejected value: "Runtime error: expected the system to be little-endian!")

Upgrading to the latest stable version of Yarn 4.x should resolve these core compatibility problems.

Acceptance Criteria:

Description of criteria:

• Upstream documentation
• Point 1
• Point 2
• Point 3

(optional) Out of Scope:

Detail about what is specifically not being delivered in the story

Engineering Details:

• (optional) https://github/com/link.to.enhancement/
• (optional) https://issues.redhat.com/link.to.spike
• Engineering detail 1
• Engineering detail 2

This requires/does not require a design proposal.
This requires/does not require a feature gate.