Bump sentry-sdk from 1.4.3 to 2.8.0 in /example

Bumps [sentry-sdk](https://github.com/getsentry/sentry-python) from 1.4.3 to 2.8.0.
- [Release notes](https://github.com/getsentry/sentry-python/releases)
- [Changelog](https://github.com/getsentry/sentry-python/blob/master/CHANGELOG.md)
- [Commits](getsentry/sentry-python@1.4.3...2.8.0)

---
updated-dependencies:
- dependency-name: sentry-sdk
  dependency-type: direct:production
...

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

example/Pipfile

@@ -34,7 +34,7 @@ gunicorn = "==20.1.0"
 aiosmtplib = "==1.1.6"
 aiohttp = ">=3.8.0"
 premailer = "==3.10.0"
-sentry-sdk = "==1.4.3"
+sentry-sdk = "==2.8.0"
 coloredlogs = ">=15.0.1"
 boto3 = "==1.20.0"
 PyYAML = "==6.0"