Bump amazonAwsJavaSdkVersion from 1.12.620 to 1.12.621

Bumps `amazonAwsJavaSdkVersion` from 1.12.620 to 1.12.621.

Updates `com.amazonaws:aws-java-sdk-core` from 1.12.620 to 1.12.621
- [Changelog](https://github.com/aws/aws-sdk-java/blob/master/CHANGELOG.md)
- [Commits](aws/aws-sdk-java@1.12.620...1.12.621)

Updates `com.amazonaws:aws-java-sdk-xray` from 1.12.620 to 1.12.621
- [Changelog](https://github.com/aws/aws-sdk-java/blob/master/CHANGELOG.md)
- [Commits](aws/aws-sdk-java@1.12.620...1.12.621)

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

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

lambda/build.gradle

@@ -3,7 +3,7 @@ apply plugin: 'org.springframework.boot'
 buildscript {
     ext {
         awsSdkVersion = '2.22.1'
-        amazonAwsJavaSdkVersion = '1.12.620'
+        amazonAwsJavaSdkVersion = '1.12.621'
     }
 }