Update to http4s-server-1.0.0-M38

blaze-client/src/main/scala/org/http4s/blaze/client/BlazeClientBuilder.scala

@@ -287,7 +287,7 @@ final class BlazeClientBuilder[F[_]] private (
     */
   def resourceWithState: Resource[F, (Client[F], BlazeClientState[F])] =
     for {
-      dispatcher <- Dispatcher[F]
+      dispatcher <- Dispatcher.parallel[F]
       scheduler <- scheduler
       _ <- Resource.eval(verifyAllTimeoutsAccuracy(scheduler))
       _ <- Resource.eval(verifyTimeoutRelations())

blaze-client/src/test/scala/org/http4s/blaze/client/BlazeClientBase.scala

@@ -81,7 +81,7 @@ trait BlazeClientBase extends CatsEffectSuite {
 
   private def makeScaffold(num: Int, secure: Boolean): Resource[IO, ServerScaffold[IO]] =
     for {
-      dispatcher <- Dispatcher[IO]
+      dispatcher <- Dispatcher.parallel[IO]
       getHandler <- Resource.eval(
         RoutesToHandlerAdapter(
           HttpRoutes.of[IO] {

blaze-client/src/test/scala/org/http4s/blaze/client/Http1ClientStageSuite.scala

@@ -56,7 +56,7 @@ class Http1ClientStageSuite extends CatsEffectSuite with DispatcherIOFixture {
   private val fooConnection =
     ResourceFunFixture[Http1Connection[IO]] {
       for {
-        dispatcher <- Dispatcher[IO]
+        dispatcher <- Dispatcher.parallel[IO]
         connection <- mkConnection(FooRequestKey, dispatcher)
       } yield connection
     }

blaze-client/src/test/scala/org/http4s/blaze/client/PoolManagerSuite.scala

@@ -20,7 +20,6 @@ package client
 
 import cats.effect._
 import cats.effect.std._
-import cats.implicits._
 import com.comcast.ip4s._
 import fs2.Stream
 import munit.CatsEffectSuite

blaze-core/src/test/scala/org/http4s/blaze/core/DispatcherIOFixture.scala

@@ -23,6 +23,6 @@ import munit.CatsEffectSuite
 
 trait DispatcherIOFixture { this: CatsEffectSuite =>
 
-  def dispatcher: SyncIO[FunFixture[Dispatcher[IO]]] = ResourceFunFixture(Dispatcher[IO])
+  def dispatcher: SyncIO[FunFixture[Dispatcher[IO]]] = ResourceFunFixture(Dispatcher.parallel[IO])
 
 }

blaze-core/src/test/scala/org/http4s/blaze/core/websocket/WebSocketHandshakeSuite.scala

@@ -17,7 +17,7 @@
 package org.http4s.blaze.core.websocket
 
 import cats.effect.IO
-import cats.effect.std.Random
+import cats.effect.std.SecureRandom
 import munit.CatsEffectSuite
 
 class WebSocketHandshakeSuite extends CatsEffectSuite {
@@ -30,7 +30,7 @@ class WebSocketHandshakeSuite extends CatsEffectSuite {
 
   test("WebSocketHandshake should do a round trip") {
     for {
-      random <- Random.javaSecuritySecureRandom[IO]
+      random <- SecureRandom.javaSecuritySecureRandom[IO]
       client <- WebSocketHandshake.clientHandshaker[IO]("www.foo.com", random)
       hs = client.initHeaders
       valid <- WebSocketHandshake.serverHandshake[IO](hs)

blaze-server/src/main/scala/org/http4s/blaze/server/BlazeServerBuilder.scala

@@ -428,7 +428,7 @@ class BlazeServerBuilder[F[_]] private (
     for {
       // blaze doesn't have graceful shutdowns, which means it may continue to submit effects,
       // ever after the server has acknowledged shutdown, so we just need to allocate
-      dispatcher <- Resource.eval(Dispatcher[F].allocated.map(_._1))
+      dispatcher <- Resource.eval(Dispatcher.parallel[F].allocated.map(_._1))
       scheduler <- tickWheelResource
 
       _ <- Resource.eval(verifyTimeoutRelations())

blaze-server/src/test/scala/org/http4s/blaze/server/Http1ServerStageSpec.scala

@@ -58,7 +58,7 @@ class Http1ServerStageSpec extends CatsEffectSuite {
     def apply() = d
 
     override def beforeAll(): IO[Unit] =
-      Dispatcher[IO].allocated.map { case (dispatcher, cancelation) =>
+      Dispatcher.parallel[IO].allocated.map { case (dispatcher, cancelation) =>
         shutdown = cancelation
         d = dispatcher
       }

build.sbt

@@ -2,7 +2,7 @@ import Dependencies._
 
 val Scala213 = "2.13.10"
 val Scala3 = "3.2.1"
-val http4sVersion = "1.0.0-M37"
+val http4sVersion = "1.0.0-M38"
 val munitCatsEffectVersion = "2.0.0-M3"
 
 ThisBuild / resolvers +=