chore: use specmatic-async docker image

Author: yogeshnikam671

specmatic.yaml

@@ -3,7 +3,7 @@ contracts:
   - provides:
       - specs:
           - spec/order-events-async-api.yaml
-        specType: ASYNCAPI
+        specType: asyncapi
         config:
           servers:
             - host: http://localhost:4566

src/test/kotlin/ContractTest.kt

@@ -77,7 +77,7 @@ class ContractTest {
         println("Starting Specmatic contract tests...")
 
         // Setup Specmatic container with host network mode
-        val specmaticContainer = GenericContainer(DockerImageName.parse("specmatic/specmatic-async-core:latest"))
+        val specmaticContainer = GenericContainer(DockerImageName.parse("specmatic/specmatic-async:latest"))
             .withCommand("test")
             .withFileSystemBind(
                 "./specmatic.yaml",