Add JDK8 datatype dependency in codegen module (#6065)

Author: zoewangg

.brazil.json

@@ -118,7 +118,8 @@
     "dependencies": {
         "com.fasterxml.jackson.core:jackson-annotations": { "packageName": "Jackson-annotations", "packageVersion": "2.9.x" },
         "com.fasterxml.jackson.core:jackson-core": { "packageName": "Jackson-core", "packageVersion": "2.9.x" },
-        "com.fasterxml.jackson.core:jackson-databind": { "packageName": "Jackson-databind", "packageVersion": "2.9.x" },
+        "com.fasterxml.jackson.core:jackson-databind": { "packageName": "Jackson-databind", "packageVersion": "2.12.x" },
+        "com.fasterxml.jackson.core:jackson-databind": { "packageName": "jackson-datatype-jdk8", "packageVersion": "2.12.x" },
         "com.fasterxml.jackson.dataformat:jackson-dataformat-cbor": { "packageName": "Jackson-dataformat-cbor", "packageVersion": "2.9.x" },
         "com.fasterxml.jackson.jr:jackson-jr-objects": { "packageName": "Maven-com-fasterxml-jackson-jr_jackson-jr-objects", "packageVersion": "2.11.x" },
         "com.fasterxml.jackson.jr:jackson-jr-stree": { "packageName": "Maven-com-fasterxml-jackson-jr_jackson-jr-stree", "packageVersion": "2.11.x" },

codegen/pom.xml

@@ -201,6 +201,10 @@
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
         </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-jdk8</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>

codegen/src/main/java/software/amazon/awssdk/codegen/internal/Jackson.java

@@ -19,6 +19,7 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.ObjectWriter;
 import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
 import com.fasterxml.jackson.jr.ob.JSON;
 import com.fasterxml.jackson.jr.stree.JrSimpleTreeExtension;
 import com.fasterxml.jackson.jr.stree.JrsValue;
@@ -78,6 +79,7 @@ public static void writeWithObjectMapper(Object value, Writer w) throws IOExcept
             synchronized (Jackson.class) {
                 if (OBJECT_MAPPER == null) {
                     OBJECT_MAPPER = new ObjectMapper().configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true)
+                                                      .registerModule(new Jdk8Module())
                                                       .writerWithDefaultPrettyPrinter();
                 }
             }