Bump markupsafe from 1.1.1 to 2.1.1 (#19)

Bumps [markupsafe](https://github.com/pallets/markupsafe) from 1.1.1 to 2.1.1.
- [Release notes](https://github.com/pallets/markupsafe/releases)
- [Changelog](https://github.com/pallets/markupsafe/blob/main/CHANGES.rst)
- [Commits](pallets/markupsafe@1.1.1...2.1.1)

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

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

Author: dependabot[bot]

requirements.txt

@@ -8,7 +8,7 @@ flask-restful==0.3.8
 flask-sqlalchemy==2.4.3
 itsdangerous==1.1.0
 jinja2==2.11.3
-markupsafe==1.1.1
+markupsafe==2.1.1
 pymongo==3.12.0
 pytz==2020.1
 six==1.16.0