Update pandas requirement from ~=1.5.0 to ~=1.5.1

Updates the requirements on [pandas](https://github.com/pandas-dev/pandas) to permit the latest version.
- [Release notes](https://github.com/pandas-dev/pandas/releases)
- [Changelog](https://github.com/pandas-dev/pandas/blob/main/RELEASE.md)
- [Commits](pandas-dev/pandas@v1.5.0...v1.5.1)

---
updated-dependencies:
- dependency-name: pandas
  dependency-type: direct:production
...

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

requirements.txt

@@ -80,7 +80,7 @@ opencensus-context~=0.1.3
 opencensus-ext-azure~=1.1.7
 ordered-set~=4.1.0
 packaging~=21.3
-pandas~=1.5.0
+pandas~=1.5.1
 pandocfilters~=1.5.0
 parso~=0.8.3
 pickleshare~=0.7.5