Update org.jetbrains.kotlinx to 1.6.0

Closes gh-10725

Author: Steve Riesenberg

dependencies/spring-security-dependencies.gradle

@@ -13,7 +13,7 @@ dependencies {
 	api platform("org.junit:junit-bom:5.8.1")
 	api platform("org.springframework.data:spring-data-bom:2021.1.0")
 	api platform("org.jetbrains.kotlin:kotlin-bom:$kotlinVersion")
-	api platform("org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.5.2")
+	api platform("org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.6.0")
 	api platform("com.fasterxml.jackson:jackson-bom:2.13.1")
 	constraints {
 		api "ch.qos.logback:logback-classic:1.2.10"