Bump flask-talisman from 0.7.0 to 0.8.1

Bumps [flask-talisman](https://github.com/wntrblm/flask-talisman) from 0.7.0 to 0.8.1.
- [Release notes](https://github.com/wntrblm/flask-talisman/releases)
- [Commits](wntrblm/flask-talisman@v0.7.0...v0.8.1)

---
updated-dependencies:
- dependency-name: flask-talisman
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -5,7 +5,7 @@ Flask==2.0.1
 Flask-SSLify==0.1.5
 Flask-Testing==0.8.1
 Flask-SeaSurf==0.3.0
-flask-talisman==0.7.0
+flask-talisman==0.8.1
 gunicorn==20.1.0
 pycodestyle==2.7.0
 pydocstyle==6.1.1