Move openstack-tox-py311-arm64 to be with openstack-tox-py311

Largely cosmetic, but it seesm like generally we group jobs by the
python version under test.

Change-Id: I9435c9341215c843ede309105abc5a305d34b776

zuul.d/jobs.yaml

@@ -337,6 +337,18 @@
       bindep_profile: test py311
       python_version: '3.11'
 
+- job:
+    name: openstack-tox-py311-arm64
+    parent: openstack-tox-py311
+    nodeset: debian-bookworm-arm64
+    timeout: 3600
+    description: |
+
+      Run unit tests for an OpenStack Python project under cPython
+      version 3.11 on top of arm64 architecture.
+
+      Uses tox with the ``py311`` environment in arm64 platform.
+
 - job:
     name: openstack-tox-py312
     parent: openstack-tox
@@ -355,18 +367,6 @@
       python_use_pyenv: True
       python_version: '3.12'
 
-- job:
-    name: openstack-tox-py311-arm64
-    parent: openstack-tox-py311
-    nodeset: debian-bookworm-arm64
-    timeout: 3600
-    description: |
-
-      Run unit tests for an OpenStack Python project under cPython
-      version 3.11 on top of arm64 architecture.
-
-      Uses tox with the ``py311`` environment in arm64 platform.
-
 - job:
     name: openstack-tox-pypy
     parent: openstack-tox