Update README.md (#482)

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README.md

@@ -22,7 +22,7 @@ To use ZIO DynamoDB, we need to add the following lines to our `build.sbt` file:
 
 ```scala
 libraryDependencies ++= Seq(
-  "dev.zio" %% "zio-dynamodb" % "1.0.0-RC6"
+  "dev.zio" %% "zio-dynamodb" % "1.0.0-RC7"
 )
 ```
 
@@ -32,7 +32,7 @@ To use the new Cats Effect 3 interop module, we need to also add the following l
 
 ```scala
 libraryDependencies ++= Seq(
-  "dev.zio" %% "zio-dynamodb-ce" "1.0.0-RC6"
+  "dev.zio" %% "zio-dynamodb-ce" "1.0.0-RC7"
 )
 ```
 
@@ -43,7 +43,7 @@ AWS tools like the CLI and Console read/write a special JSON representation of d
 
 ```scala
 libraryDependencies ++= Seq(
-  "dev.zio" %% "zio-dynamodb-json" "1.0.0-RC6"
+  "dev.zio" %% "zio-dynamodb-json" "1.0.0-RC7"
 )
 ```