Update README.md

Author: konfig-publisher

README.md

@@ -1,5 +1,13 @@
 # splitit-web-sdks
 
+# ⚠️ Warning: Deprecated SDKs
+
+**⚠️ All SDKs in this repository are fully deprecated as of December 2024.**
+
+- These SDKs are no longer maintained or supported.
+
+For more information, please contact [[email protected]](mailto:[email protected]).
+
 |Language|Version|Package Manager|README|Source|
 |-|-|-|-|-|
 |Java|3.0.8|[Maven Central](https://central.sonatype.com/artifact/com.konfigthis/splitit-web-java-sdk/3.0.8)|[README](https://github.com/konfig-dev/splitit-web-sdks/tree/HEAD/java#readme)|[Source](https://github.com/konfig-dev/splitit-web-sdks/tree/HEAD/java)|
@@ -8,4 +16,4 @@
 |C#|3.0.8|[NuGet](https://nuget.org/packages/Splitit.Web.Net/3.0.8)|[README](https://github.com/konfig-dev/splitit-web-sdks/tree/HEAD/csharp#readme)|[Source](https://github.com/konfig-dev/splitit-web-sdks/tree/HEAD/csharp)|
 |PHP (7.0+)|3.0.8|[Packagist](https://packagist.org/packages/konfig/splitit-web-php-sdk#3.0.8)|[README](https://github.com/konfig-dev/splitit-web-php-sdk/tree/HEAD#readme)|[Source](https://github.com/konfig-dev/splitit-web-php-sdk/tree/HEAD)|
 |Go|1.8.8|[pkg.go.dev](https://pkg.go.dev/github.com/konfig-dev/splitit-web-sdks/go)|[README](https://github.com/konfig-dev/splitit-web-sdks/tree/HEAD/go#readme)|[Source](https://github.com/konfig-dev/splitit-web-sdks/tree/HEAD/go)|
-|PHP (7.0+)|3.0.9|[Packagist](https://packagist.org/packages/konfig/splitit-web-php-guzzle6-sdk#3.0.9)|[README](https://github.com/konfig-dev/splitit-web-php-guzzle6-sdk/tree/HEAD#readme)|[Source](https://github.com/konfig-dev/splitit-web-php-guzzle6-sdk/tree/HEAD)|
+|PHP (7.0+)|3.0.9|[Packagist](https://packagist.org/packages/konfig/splitit-web-php-guzzle6-sdk#3.0.9)|[README](https://github.com/konfig-dev/splitit-web-php-guzzle6-sdk/tree/HEAD#readme)|[Source](https://github.com/konfig-dev/splitit-web-php-guzzle6-sdk/tree/HEAD)|