Bump no.nav.security:mock-oauth2-server from 2.1.4 to 2.1.5

Bumps [no.nav.security:mock-oauth2-server](https://github.com/navikt/mock-oauth2-server) from 2.1.4 to 2.1.5.
- [Release notes](https://github.com/navikt/mock-oauth2-server/releases)
- [Commits](navikt/mock-oauth2-server@2.1.4...2.1.5)

---
updated-dependencies:
- dependency-name: no.nav.security:mock-oauth2-server
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

modules/retrofit/build.gradle.kts

@@ -17,7 +17,7 @@ dependencies {
   api("com.squareup.retrofit2:converter-scalars:2.11.0")
 
   testImplementation("com.squareup.okhttp3:mockwebserver:4.12.0")
-  testImplementation("no.nav.security:mock-oauth2-server:2.1.4")
+  testImplementation("no.nav.security:mock-oauth2-server:2.1.5")
 
   implementation("com.google.code.findbugs:jsr305:3.0.2")