https://hyc-runtimes-jenkins.swg-devops.com/job/test.getDependency/ is failing SHA256 verification for multiple jtreg tarballs

https://hyc-runtimes-jenkins.swg-devops.com/job/test.getDependency/ is failing for multiple jtreg tarballs.
SHA256 verification for multiple jtreg tarballs pulled from ci.adoptium.net/job/dependency_pipeline/lastSuccessfulBuild. In each case, the downloaded tarball is internally self-consistent (its own .sha256sum.txt from the same build matches the actual bytes), but doesn't match the hash pinned in the script.

**Impact:**
This breaks https://hyc-runtimes-jenkins.swg-devops.com/job/test.getDependency/ and any downstream pipeline that calls getDependencies.pl has a checksum failure, since the artifact at lastSuccessfulBuild isn't or may not be stable for a version-pinned dependency name.

Start with getDependencies.pl and the test.getDependency job, then compare the pinned SHA256 values with the jtreg tarballs and .sha256sum.txt produced by dependency_pipeline/lastSuccessfulBuild. Confirm whether the version-pinned artifact reference is stable and update the dependency handling so the downstream pipeline completes without checksum failures.

Written by the indexing model from the issue text.