Merge pull request #27447 from reylejano/update-config.toml

Update config.toml in dev-1.21 branch

Author: k8s-ci-robot

config.toml

@@ -185,23 +185,23 @@ docsbranch = "master"
 url = "https://kubernetes.io"
 
 [[params.versions]]
-fullversion = "v1.20.6"
+fullversion = "v1.20.5"
 version = "v1.20"
-githubbranch = "v1.20.6"
+githubbranch = "v1.20.5"
 docsbranch = "release-1.20"
 url = "https://v1-20.kubernetes.io"
 
 [[params.versions]]
-fullversion = "v1.19.10"
+fullversion = "v1.19.9"
 version = "v1.19"
-githubbranch = "v1.19.10"
+githubbranch = "v1.19.9"
 docsbranch = "release-1.19"
 url = "https://v1-19.docs.kubernetes.io"
 
 [[params.versions]]
-fullversion = "v1.18.18"
+fullversion = "v1.18.17"
 version = "v1.18"
-githubbranch = "v1.18.18"
+githubbranch = "v1.18.17"
 docsbranch = "release-1.18"
 url = "https://v1-18.docs.kubernetes.io"