[BEAM-6040] Upgrade Samza to 1.6.0

[kw2542]

Upgrade Samza to 1.6.0

Please add a meaningful description for your change here

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Thank you for your contribution! Follow this checklist to help us incorporate your contribution quickly and easily:

• Choose reviewer(s) and mention them in a comment (R: @username).
• Mention the appropriate issue in your description (for example: "addresses [BEAM-121] Add DisplayData for IO transforms #123), if applicable. This will automatically add a link to the pull request in the issue. If you would like the issue to automatically close on merging the pull request, comment "fixes #" instead.
• Update CHANGES.md with noteworthy changes.
• If this contribution is large, please file an Apache Individual Contributor License Agreement.

See the Contributor Guide for more tips on how to make review process smoother.

To check the build health, please visit https://github.com/apache/beam/blob/master/.test-infra/BUILD_STATUS.md

GitHub Actions Tests Status (on master branch)

See CI.md for more information about GitHub Actions CI.

[kw2542]

Run Samza ValidatesRunner

[kw2542]

Run Samza ValidatesRunner

[kw2542]

Run Go Samza ValidatesRunner

[kw2542]

Run Java Samza PortableValidatesRunner

[kw2542]

Run Python Samza ValidatesRunner

[kw2542]

Run XVR_Samza PostCommit

[kw2542]

Run Java Samza PortableValidatesRunner

[kw2542]

Run Java Samza PortableValidatesRunner