fix(sbom): handle linux_kernel (#4935)

linux_kernel is an operating system, CPE type shall be set to "o", not
default "a"

Signed-off-by: Fabrice Fontaine <fabrice.fontaine@orange.com>

Author: ffontaine

cve_bin_tool/sbom_manager/generate.py

@@ -82,6 +82,8 @@ def generate_sbom(self) -> None:
             product_number = product_number + 1
             my_package.initialise()
             my_package.set_name(product_data.product)
+            if product_data.product == "linux_kernel":
+                my_package.set_type("operating-system")
             package_id = f"{product_number}-{product_data.product}"
             my_package.set_id(package_id)
             my_package.set_version(product_data.version)