Upgrade Kotlin Coroutines to 1.6.0

Closes gh-27878

build.gradle

@@ -34,7 +34,7 @@ configure(allprojects) { project ->
 			mavenBom "io.rsocket:rsocket-bom:1.1.1"
 			mavenBom "org.eclipse.jetty:jetty-bom:11.0.7"
 			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.6.10"
-			mavenBom "org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.5.2"
+			mavenBom "org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.6.0"
 			mavenBom "org.jetbrains.kotlinx:kotlinx-serialization-bom:1.2.2"
 			mavenBom "org.junit:junit-bom:5.8.2"
 		}

spring-messaging/src/main/kotlin/org/springframework/messaging/rsocket/RSocketRequesterExtensions.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,8 +19,8 @@ package org.springframework.messaging.rsocket
 import io.rsocket.transport.ClientTransport
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.reactive.asFlow
-import kotlinx.coroutines.reactive.awaitSingleOrNull
 import kotlinx.coroutines.reactive.awaitSingle
+import kotlinx.coroutines.reactor.awaitSingleOrNull
 import org.reactivestreams.Publisher
 import org.springframework.core.ParameterizedTypeReference
 import reactor.core.publisher.Flux

spring-r2dbc/src/main/kotlin/org/springframework/r2dbc/core/DatabaseClientExtensions.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@
 
 package org.springframework.r2dbc.core
 
-import kotlinx.coroutines.reactive.awaitSingleOrNull
+import kotlinx.coroutines.reactor.awaitSingleOrNull
 
 /**
  * Coroutines variant of [DatabaseClient.GenericExecuteSpec.then].

spring-r2dbc/src/main/kotlin/org/springframework/r2dbc/core/RowsFetchSpecExtensions.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,7 +17,7 @@ package org.springframework.r2dbc.core
 
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.reactive.asFlow
-import kotlinx.coroutines.reactive.awaitSingleOrNull
+import kotlinx.coroutines.reactor.awaitSingleOrNull
 import org.springframework.dao.EmptyResultDataAccessException
 
 /**

spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/client/ClientResponseExtensions.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,7 +17,7 @@
 package org.springframework.web.reactive.function.client
 
 import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.reactive.awaitSingleOrNull
+import kotlinx.coroutines.reactor.awaitSingleOrNull
 import kotlinx.coroutines.reactive.awaitSingle
 import kotlinx.coroutines.reactive.asFlow
 import org.springframework.core.ParameterizedTypeReference

spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/client/WebClientExtensions.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,7 +20,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.reactive.asFlow
 import kotlinx.coroutines.reactive.awaitSingle
-import kotlinx.coroutines.reactive.awaitSingleOrNull
+import kotlinx.coroutines.reactor.awaitSingleOrNull
 import kotlinx.coroutines.reactor.asFlux
 import kotlinx.coroutines.reactor.mono
 import org.reactivestreams.Publisher

spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/server/ServerRequestExtensions.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,7 +17,7 @@
 package org.springframework.web.reactive.function.server
 
 import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.reactive.awaitSingleOrNull
+import kotlinx.coroutines.reactor.awaitSingleOrNull
 import kotlinx.coroutines.reactive.awaitSingle
 import kotlinx.coroutines.reactive.asFlow
 import org.springframework.core.ParameterizedTypeReference