Bump streamlit from 0.80.0 to 0.81.1

Bumps [streamlit](https://github.com/streamlit/streamlit) from 0.80.0 to 0.81.1.
- [Release notes](https://github.com/streamlit/streamlit/releases)
- [Changelog](https://github.com/streamlit/streamlit/blob/develop/docs/changelog.md)
- [Commits](https://github.com/streamlit/streamlit/compare/0.80.0...0.81.1)

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

requirements.txt

@@ -4,6 +4,6 @@ matplotlib==3.4.2
 numpy==1.19.5
 opencv_python==4.5.1.48
 pydub==0.25.1
-streamlit==0.80.0
+streamlit==0.81.1
 streamlit_webrtc==0.20.0
 typing_extensions==3.7.4.3