fix(e2e): Update tmpfs permissions in worker docker container (#6253)

* chore(e2e): Update docker terraform provider to 3.6.2

* chore(e2e): Use boundary directory to avoid permission issues

* fix(e2e): Use tmpfs block to open up permissions of directory

enos/modules/docker_openssh_server_ca_key/main.tf

@@ -5,7 +5,7 @@ terraform {
   required_providers {
     docker = {
       source  = "kreuzwerker/docker"
-      version = "3.0.1"
+      version = "3.6.2"
     }
 
     tls = {