jobs/kola-upgrade: bump memory for <=37 secureboot tests

For <= 37 start_versions we'll hit an OOM in grub when running
SecureBoot tests. This is documented in
coreos/fedora-coreos-tracker#1456

Let's workaround the issue for now in our test.

jobs/kola-upgrade.Jenkinsfile

@@ -200,6 +200,12 @@ EOF
                         // https://github.com/coreos/fedora-coreos-tracker/issues/1452
                         k2 = kolaparams.clone()
                         k2.extraArgs += " --qemu-firmware=uefi-secure"
+                        if ((start_version[0..1] as Integer) <= 37) {
+                            // workaround a bug where grub would fail
+                            // to allocate memory when start_version
+                            // is <= 37.20230110.2.0
+                            k2.extraArgs += " --qemu-memory=1536"
+                        }
                         k2.marker = "uefi-secure"
                         parallelruns['Kola:UEFI-SECURE'] = { kola(k2) }
                     }