Bump gspread from 5.12.4 to 6.0.0 (#2333)

Bumps [gspread](https://github.com/burnash/gspread) from 5.12.4 to 6.0.0.
- [Release notes](https://github.com/burnash/gspread/releases)
- [Changelog](https://github.com/burnash/gspread/blob/master/HISTORY.rst)
- [Commits](https://github.com/burnash/gspread/compare/v5.12.4...v6.0.0)

---
updated-dependencies:
- dependency-name: gspread
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

requirements.txt

@@ -1,7 +1,7 @@
 alembic==1.13.1
 argparse==1.4.0
 filelock==3.13.1
-gspread==5.12.4
+gspread==6.0.0
 humanize>=0.5.1
 icalendar==5.0.11
 Jinja2==3.1.2