python3Packages.pyorc: fix build

pin protobuf to version 31

Changed files
+1 -1
pkgs
development
python-modules
pyorc
+1 -1
pkgs/development/python-modules/pyorc/default.nix
···
buildInputs = [
pkgs.lz4
-
pkgs.protobuf
+
pkgs.protobuf_31
pkgs.snappy
pkgs.zlib
pkgs.zstd