chore: bump spring and api dependencies

[timcadman]

Body:

Summary

• org.springframework.boot 3.5.6 → 3.5.11
• micrometer-registry-prometheus 1.15.5 → 1.16.4
• swagger-annotations + swagger-core-jakarta 2.2.30 → 2.2.45
• springdoc-openapi-starter-webmvc-ui 2.7.0 → 2.8.16

How to test

• Build passes (./gradlew clean build)
• Application starts
• Release tests pass (./release-test.R)
• UI works (if impacted)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud