Upgrade to Spring Security 6.3.4

Closes gh-1078

Author: bclozel

platform/build.gradle

@@ -13,7 +13,7 @@ dependencies {
 	api(platform("io.micrometer:micrometer-bom:1.13.6"))
 	api(platform("io.micrometer:micrometer-tracing-bom:1.3.5"))
 	api(platform("org.springframework.data:spring-data-bom:2024.0.5"))
-	api(platform("org.springframework.security:spring-security-bom:6.3.1"))
+	api(platform("org.springframework.security:spring-security-bom:6.3.4"))
 	api(platform("com.querydsl:querydsl-bom:5.1.0"))
 	api(platform("io.rsocket:rsocket-bom:1.1.4"))
 	api(platform("org.jetbrains.kotlin:kotlin-bom:${kotlinVersion}"))