msgpack 3.3.0 -> 6.0.0 https://repology.org/metapackage/msgpack/versions
attrpath: msgpack
Checking auto update branch...
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There might already be an open PR for this update:
- msgpack: 3.3.0 -> 6.0.0
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/220323"