ci: increase vmemory to 2GB

Vagrantfile

@@ -53,7 +53,7 @@ Vagrant.configure("2") do |config|
   # backing providers for Vagrant. These expose provider-specific options.
   # Reduce requirements so everythin runs on GitHub Actions
   config.vm.provider "virtualbox" do |v|
-    v.memory = 1024
+    v.memory = 2048
     v.cpus = 1
   end