Upgrade to Spring Security 6.5.8

Closes gh-1423

Author: bclozel

platform/build.gradle

@@ -13,7 +13,7 @@ dependencies {
 	api(platform("io.micrometer:micrometer-bom:1.15.9"))
 	api(platform("io.micrometer:micrometer-tracing-bom:1.5.9"))
 	api(platform("org.springframework.data:spring-data-bom:2025.0.9"))
-	api(platform("org.springframework.security:spring-security-bom:6.5.7"))
+	api(platform("org.springframework.security:spring-security-bom:6.5.8"))
 	api(platform("com.querydsl:querydsl-bom:5.1.0"))
 	api(platform("io.rsocket:rsocket-bom:1.1.5"))
 	api(platform("org.jetbrains.kotlin:kotlin-bom:${kotlinVersion}"))