Bump com.amazonaws:aws-java-sdk from 1.12.552 to 1.12.556

Bumps [com.amazonaws:aws-java-sdk](https://github.com/aws/aws-sdk-java) from 1.12.552 to 1.12.556.
- [Changelog](https://github.com/aws/aws-sdk-java/blob/master/CHANGELOG.md)
- [Commits](aws/aws-sdk-java@1.12.552...1.12.556)

---
updated-dependencies:
- dependency-name: com.amazonaws:aws-java-sdk
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle

@@ -59,7 +59,7 @@ java {
 ext {
   deps = [
     gocdPluginApi: 'cd.go.plugin:go-plugin-api:23.3.0',
-    awsSdk       : 'com.amazonaws:aws-java-sdk:1.12.552',
+    awsSdk       : 'com.amazonaws:aws-java-sdk:1.12.556',
     lombok       : 'org.projectlombok:lombok:1.18.30',
   ]