This is a maintenance release for RediSearch 2.8

Update urgency: MODERATE: Program an upgrade of the server, but it's not urgent.

Bug fixes:
#4614 - Shards become unresponsive when using FT.AGGREGATE with APPLY 'split(...)'(MOD-6759)
#4556 - FT.EXPLAIN returns additional } when querying using wildcards (MOD-6768)
#4646 - FT.DROPINDEX with DD flag deleted keys in one AA cluster but not the others (MOD-1855)

Improvements:
#4595 - Report memory of the TAG and TEXT tries (MOD-5902)
#4669 - Inverted index memory counting (MOD-5977,MOD-5866)
#4687 - Add missing FT.INFO fields when used within a cluster (MOD-6920)