Make hass-nabucasa a core requirement (#112623)

pyproject.toml

@@ -35,6 +35,9 @@ dependencies    = [
     "bcrypt==4.1.2",
     "certifi>=2021.5.30",
     "ciso8601==2.3.1",
+    # hass-nabucasa is imported by helpers which don't depend on the cloud
+    # integration
+    "hass-nabucasa==0.78.0",
     # When bumping httpx, please check the version pins of
     # httpcore, anyio, and h11 in gen_requirements_all
     "httpx==0.27.0",

requirements.txt

@@ -15,6 +15,7 @@ awesomeversion==24.2.0
 bcrypt==4.1.2
 certifi>=2021.5.30
 ciso8601==2.3.1
+hass-nabucasa==0.78.0
 httpx==0.27.0
 home-assistant-bluetooth==1.12.0
 ifaddr==0.2.0