update to upstream v1.3.1

Author: andrewrk

README.md

@@ -8,7 +8,7 @@ packaged for [Zig](https://ziglang.org/).
 First, update your `build.zig.zon`:
 
 ```
-zig fetch --save https://github.com/allyourcodebase/zlib/archive/refs/tags/1.3.0.tar.gz
+zig fetch --save https://github.com/allyourcodebase/zlib/archive/refs/tags/1.3.1.tar.gz
 ```
 
 Next, add this snippet to your `build.zig` script:

build.zig.zon

@@ -1,10 +1,10 @@
 .{
     .name = "zlib",
-    .version = "1.3.1-3",
+    .version = "1.3.1",
     .dependencies = .{
         .zlib = .{
-            .url = "https://github.com/madler/zlib/archive/refs/tags/v1.3.tar.gz",
-            .hash = "12207d353609d95cee9da7891919e6d9582e97b7aa2831bd50f33bf523a582a08547",
+            .url = "https://github.com/madler/zlib/archive/refs/tags/v1.3.1.tar.gz",
+            .hash = "1220fed0c74e1019b3ee29edae2051788b080cd96e90d56836eea857b0b966742efb",
         },
     },
     .paths = .{