fix(ci): adopt augmented SBOM integration with Silk MONGOSH-1773

[addaleax]

Created asset groups manually via:

for group in darwin-x64 darwin-arm64 linux-x64 linux-x64-openssl11 linux-x64-openssl3 linux-arm64 linux-arm64-openssl11 linux-arm64-openssl3 linux-ppc64le linux-s390x win32; do
  docker run --platform="linux/amd64" -it --rm -v ${PWD}:/pwd \
    --env-file silkbomb.env \
    artifactory.corp.mongodb.com/release-tools-container-registry-public-local/silkbomb:1.0 \
    asset-group --asset-cmd create --silk-asset-group mongosh-${group} \
    --branch "main" \
    --file-paths "*" \
    --name "MongoDB Shell ${group}" \
    --repo "mongodb-js/mongosh"
done

(https://docs.devprod.prod.corp.mongodb.com/mms/python/src/sbom/silkbomb/docs/commands/ASSET_GROUPS)