pdfgrep: 2.0.1 -> 2.1.0

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/pdfgrep/versions.

These checks were done:

- built on NixOS
- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)
- found 2.1.0 with grep in /nix/store/myh5qz0s31x6f20qqxnzbjixvsqgm7r1-pdfgrep-2.1.0
- directory tree listing: https://gist.github.com/199c1837bf332973fcb70131751ed26e

pkgs/tools/typesetting/pdfgrep/default.nix

@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   name = "pdfgrep-${version}";
-  version = "2.0.1";
+  version = "2.1.0";
 
   src = fetchurl {
     url = "https://pdfgrep.org/download/${name}.tar.gz";
-    sha256 = "07llkrkcfjwd3ybai9ad10ybhr0biffcplmy7lw4fb87nd2dfw03";
+    sha256 = "13al23c2wlpsha6c1z1h6gh5lxzphsnzpd7b78qj16rq2r46phf9";
   };
 
   postPatch = ''