Bump com.amazonaws:aws-java-sdk from 1.12.499 to 1.12.503

Bumps [com.amazonaws:aws-java-sdk](https://github.com/aws/aws-sdk-java) from 1.12.499 to 1.12.503.
- [Changelog](https://github.com/aws/aws-sdk-java/blob/master/CHANGELOG.md)
- [Commits](aws/aws-sdk-java@1.12.499...1.12.503)

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

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle

@@ -56,7 +56,7 @@ java {
 ext {
     deps = [
         gocdPluginApi: 'cd.go.plugin:go-plugin-api:23.1.0',
-        awsSdk       : 'com.amazonaws:aws-java-sdk:1.12.499',
+        awsSdk       : 'com.amazonaws:aws-java-sdk:1.12.503',
         slf4j        : 'org.slf4j:slf4j-api:2.0.7',
     ]