Update anyio requirement from ~=4.6.2.post1 to ~=4.7.0

Updates the requirements on [anyio](https://github.com/agronholm/anyio) to permit the latest version.
- [Release notes](https://github.com/agronholm/anyio/releases)
- [Changelog](https://github.com/agronholm/anyio/blob/master/docs/versionhistory.rst)
- [Commits](agronholm/anyio@4.6.2.post1...4.7.0)

---
updated-dependencies:
- dependency-name: anyio
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -1,5 +1,5 @@
 aiolimiter~=1.2.1
-anyio~=4.6.2.post1
+anyio~=4.7.0
 apngasm_python~=1.3.1
 av~=13.1.0
 beautifulsoup4~=4.12.3