Bump starlette from 0.39.2 to 0.40.0

Bumps [starlette](https://github.com/encode/starlette) from 0.39.2 to 0.40.0.
- [Release notes](https://github.com/encode/starlette/releases)
- [Changelog](https://github.com/encode/starlette/blob/master/docs/release-notes.md)
- [Commits](encode/starlette@0.39.2...0.40.0)

---
updated-dependencies:
- dependency-name: starlette
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements-dev.txt

@@ -10,8 +10,6 @@ anyio==4.6.0
     #   watchfiles
 appdirs==1.4.4
     # via shiny
-appnope==0.1.4
-    # via ipykernel
 asgiref==3.8.1
     # via shiny
 asttokens==2.4.1
@@ -305,7 +303,7 @@ soupsieve==2.6
     # via beautifulsoup4
 stack-data==0.6.3
     # via ipython
-starlette==0.39.2
+starlette==0.40.0
     # via shiny
 text-unidecode==1.3
     # via python-slugify