fix(deps): update dependency org.entur.ror:superpom from v2.5 to v2.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.entur.ror:superpom (source)	2.5 -> 2.6

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Release Notes

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

### [`v2.6`](https://togithub.com/spring-projects/spring-boot/compare/v2.5.0...v2.6.0) [Compare Source](https://togithub.com/spring-projects/spring-boot/compare/v2.5.0...v2.6.0)

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