Update aiolimiter requirement from ~=1.2.0 to ~=1.2.1

Updates the requirements on [aiolimiter](https://github.com/mjpieters/aiolimiter) to permit the latest version.
- [Release notes](https://github.com/mjpieters/aiolimiter/releases)
- [Changelog](https://github.com/mjpieters/aiolimiter/blob/master/CHANGELOG.md)
- [Commits](mjpieters/aiolimiter@v1.2.0...v1.2.1)

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

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

requirements.txt

@@ -1,4 +1,4 @@
-aiolimiter~=1.2.0
+aiolimiter~=1.2.1
 anyio~=4.6.2.post1
 apngasm_python~=1.3.1
 av~=13.1.0