Fix working directory

Author: lauzadis

.github/workflows/continuous-integration.yml

@@ -47,7 +47,8 @@ jobs:
           cache: 'gradle'
       - name: Configure Gradle
         uses: awslabs/aws-kotlin-repo-tools/.github/actions/configure-gradle@main
-        working-directory: ./smithy-kotlin
+        with:
+          working-directory: 'smithy-kotlin'
 
       - name: Build and Test on JVM
         working-directory: ./smithy-kotlin