fix(deps): update dependency org.entur.ror:superpom from v2.6 to v2.8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.entur.ror:superpom (source)	2.6 -> 2.8

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Release Notes

spring-projects/spring-boot (org.entur.ror:superpom)

### [`v2.7`](https://togithub.com/spring-projects/spring-boot/compare/v2.6.0...v2.7.0) [Compare Source](https://togithub.com/spring-projects/spring-boot/compare/v2.6.0...v2.7.0)

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