[BEAM-7635] Migrate SnsIO to AWS SDK for Java 2

[cmachgodaddy]

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Post-Commit Tests Status (on master branch)

Lang	SDK	Apex	Dataflow	Flink	Gearpump	Samza	Spark
Go		---	---		---	---
Java
Python		---			---	---
XLang	---	---	---		---	---	---

Pre-Commit Tests Status (on master branch)

---	Java	Python	Go	Website
Non-portable
Portable	---		---	---

See .test-infra/jenkins/README for trigger phrase, status and link of all Jenkins jobs.

[iemejia]

You need to add this file extension to the RAT plugin exclusions

beam/build.gradle

Line 108 in 989c928

"**/*.json",

[iemejia]

LGTM Merging manually to do a minor fix in the Coder.
Great work @cmachgodaddy

[iemejia]

Closing manually since already merged. One extra comment on this one. I finally did not change the PublishResponse return type in case users in a step downstream in the Pipeline may want to use the ids to request the status of the response.