docs: add angular 18 to support matrix

Akshat55 · Akshat55 · commit 440d87cb7de1 · 2024-07-03T19:06:18.000-04:00
Signed-off-by: Akshat Patel &lt;akshat@live.ca&gt;
diff --git a/README.md b/README.md
@@ -69,6 +69,7 @@ Angular version support matrix:
 | 15      | ❌ | ✅ | ✅                   |
 | 16      | ❌ | ❌ | ✅                   |
 | 17      | ❌ | ❌ | ✅                   |
+| 18      | ❌ | ❌ | ✅                   |
 
 Carbon Components Angular version support matrix:
 | Carbon Components Angular version | Community support | Active support |
