Update README.md

Use php/setup-php-sdk in example and update list of supported versions.

Author: nikic

README.md

@@ -7,7 +7,7 @@ for building and testing PHP extensions on Windows.
 
 ````.yml
 - id: setup-php-sdk
-  uses: cmb69/setup-php-sdk@v0.5
+  uses: php/setup-php-sdk@v0.8
   with:
     version: 8.0
     arch: x64
@@ -25,7 +25,7 @@ for building and testing PHP extensions on Windows.
 ## Inputs
 
 - `version`: the PHP version to build for
-  (`7.0`, `7.1`, `7.2`, `7.3`, `7.4`, `8.0` or `8.1`)
+  (`7.0`, `7.1`, `7.2`, `7.3`, `7.4`, `8.0`, `8.1`, `8.2` or `8.3`)
 - `arch`: the architecture to build for (`x64` or `x86`)
 - `ts`: thread-safety (`nts` or `ts`)
 - `deps`: dependency libraries to install; for now, only