chore(deps): update dependency anyio to v4.6.1

##### v4.6.1 

This release contains all the changes from both v4.5.1 and v4.6.0, plus:

-   Fixed TaskGroup and CancelScope producing cyclic references in tracebacks when raising exceptions ([#806](agronholm/anyio#806)) (PR by [@graingert](https://github.com/graingert))

requirements.txt

@@ -4,7 +4,7 @@
 #
 #    bazel run //:requirements.update
 #
-anyio==4.6.0 \
+anyio==4.6.1 \
     --hash=sha256:137b4559cbb034c477165047febb6ff83f390fc3b20bf181c1fc0a728cb8beeb \
     --hash=sha256:c7d2e9d63e31599eeb636c8c5c03a7e108d73b345f064f1c19fdc87b79036a9a
     # via