docs(*): update CHANGELOG.md with 6.2.1 changes
docs(*): update CHANGELOG.md with 6.2.1 changes

(cherry picked from commit 54e14310c55ac8eea30fa9ac5386d72454cb7754)

# Conflicts:
#	CHANGELOG.md

Infragistics/zero-blocks,Infragistics/zero-blocks,Infragistics/zero-blocks