RFR: 7904130: Update jtreg to bundle AsmTools 9.1

[Iris Clark]

On Fri, 9 Jan 2026 09:33:20 GMT, Christian Stein <cstein at openjdk.org> wrote:

> Please review this change for jtreg to bundle AsmTools 9.1
> 
> The SHA1 checksum was computed and verified from the Source code `.zip` file attached to https://github.com/openjdk/asmtools/releases/tag/9.1-b01

Marked as reviewed by iris (Reviewer).

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PR Review: https://git.openjdk.org/jtreg/pull/307#pullrequestreview-3644862355