devel/py-sentry-sdk: Update to 1.21.1

• Add CPE related entries while I'm here.

Changelog since 1.5.12:

https://github.com/getsentry/sentry-python/compare/1.5.12...1.21.1

PR: 271149
Approved by: 0mp (maintainer)
MFH: 2023Q2
Security: 5dae5cc-9ee6-4577-a93e-2ab57780e707

(cherry picked from commit 8d6658273d0d490c254c07fc222b2b91d112bb0a)