btrfs-progs: 4.19.1 -> 4.20.1

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/btrfs-progs/versions

pkgs/tools/filesystems/btrfs-progs/default.nix

@@ -4,11 +4,11 @@
 
 stdenv.mkDerivation rec {
   name = "btrfs-progs-${version}";
-  version = "4.19.1";
+  version = "4.20.1";
 
   src = fetchurl {
     url = "mirror://kernel/linux/kernel/people/kdave/btrfs-progs/btrfs-progs-v${version}.tar.xz";
-    sha256 = "1f7gpk9206ph081fr0af8k57i58zjb03xwd8k69177a7rzsjmn04";
+    sha256 = "1kagxh10qf1n38zbpya2ghjiybxnag36h9xyqb26fy6iy4gmsbsn";
   };
 
   nativeBuildInputs = [