Switch fedora-latest to use fedora-34

Fedora 32 is now EOL, we should test against the newly released
version of Fedora which is 34.

Depends-On: https://review.opendev.org/c/openstack/project-config/+/795604
Change-Id: I10d868aca20d1a10d3e7fcfeb78f6fda4c896ee8
diff --git a/.zuul.yaml b/.zuul.yaml
index 74223d4..968d79f 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -72,7 +72,7 @@
     name: devstack-single-node-fedora-latest
     nodes:
       - name: controller
-        label: fedora-32
+        label: fedora-34
     groups:
       - name: tempest
         nodes: