CI VMs: bump to new versions with tmpfs /tmp

For the last long time, Fedora CI VMs have had a disk /tmp.
Real-world setups typically have tmpfs /tmp. This switches
to CI VMs that reflect the real world.

See containers/automation_images#340

Signed-off-by: Ed Santiago <santiago@redhat.com>

.cirrus.yml

@@ -30,7 +30,7 @@ env:
     SKOPEO_PR:
 
     # Google-cloud VM Images
-    IMAGE_SUFFIX: "c20240320t153921z-f39f38d13"
+    IMAGE_SUFFIX: "c20240411t124913z-f39f38d13"
     FEDORA_CACHE_IMAGE_NAME: "fedora-${IMAGE_SUFFIX}"
     DEBIAN_CACHE_IMAGE_NAME: "debian-${IMAGE_SUFFIX}"