Update requirements.txt

Bump HA Version to 2026.3 (also stubs)

Author: jaal2001

requirements.txt

@@ -1,4 +1,4 @@
-homeassistant==2025.8.0
+homeassistant==2026.3
 
 # Testing
 pytest-homeassistant-custom-component==0.13.269  # Matching version
@@ -17,6 +17,6 @@ ruff==0.9.4
 mypy==1.15.0
 
 # Typing
-homeassistant-stubs==2025.8.0 # Matching HA version
+homeassistant-stubs==2026.3 # Matching HA version
 types-python-slugify==8.0.0.2
 voluptuous-stubs==0.1.1