Bump pandas from 1.2.3 to 1.2.4

Bumps [pandas](https://github.com/pandas-dev/pandas) from 1.2.3 to 1.2.4.
- [Release notes](https://github.com/pandas-dev/pandas/releases)
- [Changelog](https://github.com/pandas-dev/pandas/blob/master/RELEASE.md)
- [Commits](pandas-dev/pandas@v1.2.3...v1.2.4)

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

Author: dependabot[bot]

requirements.txt

@@ -11,7 +11,7 @@ pydub==0.25.1
 resampy==0.2.2
 ffmpeg-python==0.2.0
 cma==3.0.3
-pandas==1.2.3
+pandas==1.2.4
 librosa==0.8.0
 numba~=0.53.1
 opencv-python