chore(deps): bump the kontrakt group with 1 update

Bumps the kontrakt group with 1 update: [no.nav.fpsak.tidsserie:fpsak-tidsserie](https://github.com/navikt/fp-tidsserie).

- [Release notes](https://github.com/navikt/fp-tidsserie/releases)
- [Changelog](https://github.com/navikt/fp-tidsserie/blob/master/release.properties)
- [Commits](navikt/fp-tidsserie@2.6.8...2.7.1)

---
updated-dependencies:
- dependency-name: no.nav.fpsak.tidsserie:fpsak-tidsserie
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: kontrakt
...

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -109,7 +109,7 @@
             <dependency>
                 <groupId>no.nav.fpsak.tidsserie</groupId>
                 <artifactId>fpsak-tidsserie</artifactId>
-                <version>2.6.8</version>
+                <version>2.7.1</version>
             </dependency>
         </dependencies>
     </dependencyManagement>