Bump sentry-sdk from 0.17.6 to 0.18.0 in /backend

Bumps [sentry-sdk](https://github.com/getsentry/sentry-python) from 0.17.6 to 0.18.0.
- [Release notes](https://github.com/getsentry/sentry-python/releases)
- [Changelog](https://github.com/getsentry/sentry-python/blob/master/CHANGES.md)
- [Commits](getsentry/sentry-python@0.17.6...0.18.0)

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

Author: dependabot[bot]

backend/requirements.txt

@@ -34,7 +34,7 @@ geopy==2.0.0
 fuzzywuzzy==0.18.0
 python-Levenshtein==0.12.0
 
-sentry-sdk==0.17.6
+sentry-sdk==0.18.0
 
 randomuser==1.6
 pyimgur==0.6.0