Upgrade to Kotlin 1.7.0

Closes gh-28619

build.gradle

@@ -3,8 +3,8 @@ plugins {
 	id 'io.spring.nohttp' version '0.0.10'
 	id "io.freefair.aspectj" version '6.4.0' apply false
 	id 'org.jetbrains.dokka' version '1.6.10' apply false
-	id 'org.jetbrains.kotlin.jvm' version '1.6.20' apply false
-	id "org.jetbrains.kotlin.plugin.serialization" version '1.6.20' apply false
+	id 'org.jetbrains.kotlin.jvm' version '1.7.0' apply false
+	id "org.jetbrains.kotlin.plugin.serialization" version '1.7.0' apply false
 	id 'org.asciidoctor.jvm.convert' version '3.3.2'
 	id 'org.asciidoctor.jvm.pdf' version '3.3.2'
 	id "org.unbroken-dome.xjc" version '2.0.0' apply false
@@ -33,9 +33,9 @@ configure(allprojects) { project ->
 			mavenBom "io.r2dbc:r2dbc-bom:Borca-SR1"
 			mavenBom "io.rsocket:rsocket-bom:1.1.2"
 			mavenBom "org.eclipse.jetty:jetty-bom:11.0.9"
-			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.6.20"
-			mavenBom "org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.6.0"
-			mavenBom "org.jetbrains.kotlinx:kotlinx-serialization-bom:1.3.2"
+			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.7.0"
+			mavenBom "org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.6.2"
+			mavenBom "org.jetbrains.kotlinx:kotlinx-serialization-bom:1.3.3"
 			mavenBom "org.junit:junit-bom:5.8.2"
 		}
 		dependencies {