Update junit-bom to 5.9.0

Closes gh-11848

buildSrc/build.gradle

@@ -99,7 +99,7 @@ dependencies {
 	implementation 'org.jfrog.buildinfo:build-info-extractor-gradle:4.29.0'
 	implementation 'org.sonarsource.scanner.gradle:sonarqube-gradle-plugin:2.7.1'
 
-	testImplementation platform('org.junit:junit-bom:5.9.0-RC1')
+	testImplementation platform('org.junit:junit-bom:5.9.0')
 	testImplementation "org.junit.jupiter:junit-jupiter-api"
 	testImplementation "org.junit.jupiter:junit-jupiter-params"
 	testImplementation "org.junit.jupiter:junit-jupiter-engine"

dependencies/spring-security-dependencies.gradle

@@ -10,7 +10,7 @@ dependencies {
 	api platform("org.springframework:spring-framework-bom:$springFrameworkVersion")
 	api platform("io.projectreactor:reactor-bom:2020.0.23")
 	api platform("io.rsocket:rsocket-bom:1.1.3")
-	api platform("org.junit:junit-bom:5.9.0-RC1")
+	api platform("org.junit:junit-bom:5.9.0")
 	api platform("org.mockito:mockito-bom:4.7.0")
 	api platform("org.springframework.data:spring-data-bom:2021.2.2")
 	api platform("org.jetbrains.kotlin:kotlin-bom:$kotlinVersion")