Bump arrow from 1.2.0 to 1.2.1

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>

requirements.txt

@@ -8,7 +8,7 @@ cryptography==35.0.0
 aiohttp==3.7.4.post0
 SQLAlchemy==1.4.26
 python-telegram-bot==13.7
-arrow==1.2.0
+arrow==1.2.1
 cachetools==4.2.2
 requests==2.26.0
 urllib3==1.26.7