feat: update ci and readme (#7)

Author: jinzhongjia

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
         strategy:
             matrix:
                 os: [ubuntu-latest]
-                version: [0.11.0, 0.12.0, 0.13.0, ""]
+                version: [0.11.0, 0.12.0, 0.12.1, 0.13.0, ""]
             fail-fast: false
         runs-on: ${{ matrix.os }}
         steps:

README.md

@@ -41,7 +41,7 @@ const msgpack = b.dependency("zig-msgpack", .{
 exe.addModule("msgpack", msgpack.module("msgpack"));
 ```
 
-### `0.12` \ `nightly`
+### `0.12` \ `0.13`  \ `nightly`
 
 1. Add to `build.zig.zon`
 
@@ -65,4 +65,4 @@ exe.root_module.addImport("msgpack", msgpack.module("msgpack"));
 
 ## Related projects
 
-- [znvim](https://github.com/jinzhongjia/znvim)
+- [znvim](https://github.com/jinzhongjia/znvim)