Bump arrow from 1.2.0 to 1.2.1 (#1543)

Bumps [arrow](https://github.com/arrow-py/arrow) from 1.2.0 to 1.2.1.
- [Release notes](https://github.com/arrow-py/arrow/releases)
- [Changelog](https://github.com/arrow-py/arrow/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/arrow-py/arrow/compare/1.2.0...1.2.1)

---
updated-dependencies:
- dependency-name: arrow
  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>

[skip ci]

requirements.txt

@@ -1,6 +1,6 @@
 appdirs==1.4.4
 apscheduler==3.8.1
-arrow==1.2.0
+arrow==1.2.1
 backports.csv==1.0.7
 backports.functools-lru-cache==1.6.4
 backports.zoneinfo==0.2.1