Restore all disabled tests that depend on ssh

This requires us to spin up a new dagger-ci VM, as mentioned here:
https://github.com/dagger/dagger/pull/1493#issuecomment-1021080655

Signed-off-by: Gerhard Lazu <gerhard@lazu.co.uk>

pkg/alpha.dagger.io/universe.bats

@@ -123,20 +123,14 @@ setup() {
 }
 
 @test "docker command: ssh" {
-  skip "FIXME: ssh tests"
-
   dagger -e docker-command-ssh up
 }
 
 @test "docker command: ssh with key passphrase" {
-  skip "FIXME: ssh tests"
-
   dagger -e docker-command-ssh-key-passphrase up
 }
 
 @test "docker command: ssh with wrong key passphrase" {
-  skip "FIXME: ssh tests"
-
   run dagger -e docker-command-ssh-wrong-key-passphrase up
   assert_failure
 }
@@ -146,14 +140,10 @@ setup() {
 }
 
 @test "docker compose" {
-  skip "FIXME: ssh tests"
-
   dagger -e docker-compose up
 }
 
 @test "docker run: ssh" {
-  skip "FIXME: ssh tests"
-
   dagger -e docker-run-ssh up
 }