updating supported k8s versions for server (#9974)

Author: soulchips

docs/server-admin-4.8/antora.yml

@@ -4,7 +4,7 @@ version: server-4.8
 display_version: Server 4.8
 asciidoc:
   attributes:
-    kubernetesversions: 1.31 - 1.33
+    kubernetesversions: 1.33 - 1.35
 nav:
 - modules/ROOT/nav.adoc
 start_page: overview:circleci-server-overview.adoc

docs/server-admin-4.9/antora.yml

@@ -4,7 +4,7 @@ version: server-4.9
 display_version: Server 4.9
 asciidoc:
   attributes:
-    kubernetesversions: 1.31 - 1.33
+    kubernetesversions: 1.33 - 1.35
 nav:
 - modules/ROOT/nav.adoc
 start_page: overview:circleci-server-overview.adoc