Update reactivemongo-akkastream from 1.1.0-RC17 to 1.1.0-RC18

Author: scala-steward-baeldung[bot]

build.sbt

@@ -360,7 +360,7 @@ val slickVersion = "3.6.1"
 val shapelessVersion = "2.3.13"
 val scalazVersion = "7.3.8"
 val fs2Version = "3.12.2"
-val reactiveMongo = "1.1.0-RC17"
+val reactiveMongo = "1.1.0-RC18"
 val slickPgVersion = "0.23.1"
 val scalaTestContainersVersion = "0.43.0"
 val postgresqlVersion = "42.7.8"