Update to JUnit 5.9.1

Closes gh-2189

Author: rwinch

gradle/dependency-management.gradle

@@ -2,7 +2,7 @@ dependencyManagement {
 	imports {
 		mavenBom 'io.projectreactor:reactor-bom:2022.0.0-RC1'
 		mavenBom 'com.fasterxml.jackson:jackson-bom:2.13.4.20221013'
-		mavenBom 'org.junit:junit-bom:5.9.0'
+		mavenBom 'org.junit:junit-bom:5.9.1'
 		mavenBom 'org.mockito:mockito-bom:4.8.0'
 		mavenBom 'org.springframework:spring-framework-bom:6.0.0-SNAPSHOT'
 		mavenBom 'org.springframework.data:spring-data-bom:2022.0.0-SNAPSHOT'