Sentry: bump getsentry/sentry from 26.4.1 to 26.5.1 in /services/sentry

Bumps [getsentry/sentry](https://github.com/getsentry/sentry) from 26.4.1 to 26.5.1.
- [Release notes](https://github.com/getsentry/sentry/releases)
- [Commits](getsentry/sentry@26.4.1...26.5.1)

---
updated-dependencies:
- dependency-name: getsentry/sentry
  dependency-version: 26.5.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

services/sentry/docker-compose.yml

@@ -21,7 +21,7 @@ x-restart-policy: &restart_policy
   restart: unless-stopped
 
 x-sentry-defaults: &sentry_defaults
-  image: "${SENTRY_IMAGE:-ghcr.io/getsentry/sentry:26.4.1}"
+  image: "${SENTRY_IMAGE:-ghcr.io/getsentry/sentry:26.5.1}"
   depends_on:
     redis:
       <<: *depends_on-healthy