shim-15.8 for Viasat

[pejdavies1606]

Confirm the following are included in your repo, checking each box:

• completed README.md file with the necessary information
• shim.efi to be signed
• public portion of your certificate(s) embedded in shim (the file passed to VENDOR_CERT_FILE)
• binaries, for which hashes are added to vendor_db ( if you use vendor_db and have hashes allow-listed )
• any extra patches to shim via your own git tree or as files
• any extra patches to grub via your own git tree or as files
• build logs
• a Dockerfile to reproduce the build of the provided shim EFI binaries

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What is the link to your tag in a repo cloned from rhboot/shim-review?

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https://github.com/Viasat/shim-review/releases/tag/viasat-shim-x64-20241118

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What is the SHA256 hash of your final SHIM binary?

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ad18f6eb26fff69de7d162967512ac3af5accdb9dbbae52152fc76b4a8f8a255

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What is the link to your previous shim review request (if any, otherwise N/A)?

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#252

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If no security contacts have changed since verification, what is the link to your request, where they've been verified (if any, otherwise N/A)?

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#252

[steve-mcintyre]

Contacts have previously been verified in #252