Bump aiortc from 1.1.2 to 1.2.0

Bumps [aiortc](https://github.com/aiortc/aiortc) from 1.1.2 to 1.2.0.
- [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/1.1.2...1.2.0)

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

requirements.txt

@@ -1,4 +1,4 @@
-aiortc==1.1.2
+aiortc==1.2.0
 av==8.0.3
 numpy==1.20.1
 opencv_python==4.5.1.48