Merging to release-5.6: GW 5.0.15 release notes (#5596)

GW 5.0.15 release notes (#5596)

* release notes

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Co-authored-by: JoanCamosTyk <[email protected]>
Co-authored-by: Master <[email protected]>
Co-authored-by: Yaara <[email protected]>
Co-authored-by: andyo-tyk <[email protected]>
Co-authored-by: sharadregoti <[email protected]>