Bump no.nav.security:token-validation-ktor-v3 from 5.0.20 to 5.0.21

Bumps [no.nav.security:token-validation-ktor-v3](https://github.com/navikt/token-support) from 5.0.20 to 5.0.21.
- [Release notes](https://github.com/navikt/token-support/releases)
- [Commits](navikt/token-support@5.0.20...5.0.21)

---
updated-dependencies:
- dependency-name: no.nav.security:token-validation-ktor-v3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

build.gradle.kts

@@ -42,7 +42,7 @@ dependencies {
     val micrometerVersion = "1.14.5"
     val mockkVersion = "1.13.17"
 
-    val navSecurityVersion = "5.0.20"
+    val navSecurityVersion = "5.0.21"
     val tmsKtorTokenSupportVersion = "5.0.1"
 
     implementation("com.github.navikt.dittnav-common-lib:dittnav-common-utils:$dittnavCommonVersion")