Update com.nimbusds to 9.3.1

Closes gh-9569

Author: rwinch

dependencies/spring-security-dependencies.gradle

@@ -16,8 +16,8 @@ dependencies {
 	constraints {
 		api "ch.qos.logback:logback-classic:1.2.3"
 		api "com.google.inject:guice:3.0"
-		api "com.nimbusds:nimbus-jose-jwt:9.7"
-		api "com.nimbusds:oauth2-oidc-sdk:9.3"
+		api "com.nimbusds:nimbus-jose-jwt:9.8.1"
+		api "com.nimbusds:oauth2-oidc-sdk:9.3.1"
 		api "com.squareup.okhttp3:mockwebserver:3.14.9"
 		api "com.squareup.okhttp3:okhttp:3.14.9"
 		api "com.unboundid:unboundid-ldapsdk:4.0.14"