buildNimSbom: merge SBOM passthru over initial passthru

Changed files
+1 -1
pkgs
build-support
+1 -1
pkgs/build-support/build-nim-sbom.nix
···
inherit (sbom) components;
});
-
passthru = {
+
passthru = passthru // {
inherit sbom properties nimBin;
};
};