Bump version for March

Next release was not in time for 2026.2.1, bump to 2026.3.0

custom_components/tuya_local/manifest.json

@@ -18,5 +18,5 @@
         "tinytuya==1.17.6",
         "tuya-device-sharing-sdk~=0.2.1"
     ],
-    "version": "2026.2.1"
+    "version": "2026.3.0"
 }