5.6.6 version bump and README changes#7075

Merged

dgarske merged 3 commits intowolfSSL:masterfrom

cconlon:v5.6.6-prep

Dec 19, 2023

Commits on Dec 18, 2023

bump version to 5.6.6
cconlon
committed
update ChangeLog/README with 5.6.6 release information
cconlon
committed
Initialize variables to NULL
Lealem Amedie
committed