Bump pandas from 0.24.2 to 1.2.1

Bumps [pandas](https://github.com/pandas-dev/pandas) from 0.24.2 to 1.2.1.
- [Release notes](https://github.com/pandas-dev/pandas/releases)
- [Changelog](https://github.com/pandas-dev/pandas/blob/master/RELEASE.md)
- [Commits](pandas-dev/pandas@v0.24.2...v1.2.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

setup.py

@@ -30,7 +30,7 @@
     keywords='pyfileindex',
     packages=find_packages(exclude=["*tests*", "*binder*", "*notebooks*"]),
     install_requires=[
-        'pandas==0.24.2',
+        'pandas==1.2.1',
         'scandir==1.10.0'
     ],
     cmdclass=versioneer.get_cmdclass(),