Bump aiortc from 1.2.0 to 1.2.1

Bumps [aiortc](https://github.com/aiortc/aiortc) from 1.2.0 to 1.2.1.
- [Release notes](https://github.com/aiortc/aiortc/releases)
- [Changelog](https://github.com/aiortc/aiortc/blob/main/docs/changelog.rst)
- [Commits](https://github.com/aiortc/aiortc/compare/1.2.0...1.2.1)

---
updated-dependencies:
- dependency-name: aiortc
dependency-type: direct:production
update-type: version-update:semver-patch
...

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

requirements.txt

@@ -1,4 +1,4 @@
-aiortc==1.2.0
+aiortc==1.2.1
 av==8.0.3
 matplotlib==3.4.2
 numpy==1.21.0