chore(regions_update): Changes in regions for AWS services (#5080)

Co-authored-by: sergargar <38561120+sergargar@users.noreply.github.com>

prowler/providers/aws/aws_regions_by_service.json

@@ -3169,6 +3169,7 @@
     "docdb": {
       "regions": {
         "aws": [
+          "af-south-1",
           "ap-east-1",
           "ap-northeast-1",
           "ap-northeast-2",
@@ -3179,6 +3180,7 @@
           "ca-central-1",
           "eu-central-1",
           "eu-south-1",
+          "eu-south-2",
           "eu-west-1",
           "eu-west-2",
           "eu-west-3",