Add mu 1.6.10 patch

patches/145739.patch

@@ -0,0 +1,29 @@
+From a5c670a45fe6c66da6a1c4779dc8312a61ad01ad Mon Sep 17 00:00:00 2001
+From: Charlotte Van Petegem <charlotte@vanpetegem.me>
+Date: Sat, 13 Nov 2021 12:21:20 +0100
+Subject: [PATCH] mu: 1.6.9 -> 1.6.10
+
+---
+ pkgs/tools/networking/mu/default.nix | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/pkgs/tools/networking/mu/default.nix b/pkgs/tools/networking/mu/default.nix
+index b94cc498fa09f..47d0dffda0079 100644
+--- a/pkgs/tools/networking/mu/default.nix
++++ b/pkgs/tools/networking/mu/default.nix
+@@ -7,13 +7,13 @@
+ 
+ stdenv.mkDerivation rec {
+   pname = "mu";
+-  version = "1.6.9";
++  version = "1.6.10";
+ 
+   src = fetchFromGitHub {
+     owner  = "djcb";
+     repo   = "mu";
+     rev    = version;
+-    sha256 = "RoSj283fcllEbirZOScKRU4BKLoxgatDdL1qYZu+LEI=";
++    sha256 = "1uJB8QdR0JgWlogb1cdUicz+LLtYQpAvYJjwcRjXt+E=";
+   };
+ 
+   postPatch = lib.optionalString (batchSize != null) ''