tl;dr: This is a patched version of snowsql (Snowflake's default CLI runner) that is available in nixpkgs
snowsql binary, presumably, embeds a Python interpreter and the required Python libraries. One of the embedded libraries, oscrypto has the default implementation that relies on objdump command at run-time to resolve certain platform-specific native libraries.
nixpkgs solved this problem more elegantly by patching the oscrypto library.
Since source patching isn't possible with the binary-only snowsql, this flake uses a modified snowsql derivation to add binutils as a dependency (includes the needed objdump command). This allows the embedded oscrypto library's default implementation to rely on objdump to find platform-specific native libraries.