Bump pandas from 1.3.4 to 1.3.5 (#598)

Bumps [pandas](https://github.com/pandas-dev/pandas) from 1.3.4 to 1.3.5.
- [Release notes](https://github.com/pandas-dev/pandas/releases)
- [Changelog](https://github.com/pandas-dev/pandas/blob/master/RELEASE.md)
- [Commits](https://github.com/pandas-dev/pandas/compare/v1.3.4...v1.3.5)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -1,6 +1,6 @@
 numpy == 1.21.4
 scipy == 1.7.3
-pandas == 1.3.4
+pandas == 1.3.5
 matplotlib == 3.5.0
 cvxpy == 1.1.17
 pytest == 6.2.5 # For unit test