gradle: fix broken plugin source (#44835)

buildSrc/src/main/groovy/airbyte-bulk-connector.gradle

@@ -65,7 +65,6 @@ class AirbyteBulkConnectorExtension {
         }
 
         String micronautVersion = null
-        {
         // Use a temporary configuration to find the Micronaut version
         // in the transitive dependencies of the Bulk CDK base.
         def tempConfiguration = project.configurations.detachedConfiguration()
@@ -87,7 +86,6 @@ class AirbyteBulkConnectorExtension {
                     "Micronaut version number not found; $TARGET_GROUP:$TARGET_MODULE is not a transitive dependency."
             )
         }
-        }
         final String kspDependency = "io.micronaut:micronaut-inject-kotlin:$micronautVersion"
 
         project.dependencies {