[CI] Update minimum version of rabbit and k8s

RabbitMQ 3.11 and 3.12 are out of support. Arguably, 3.13 is also out of
community support, however, it is reasonable to test the operator with
current version (N) and N-1.

.github/workflows/build-test-publish.yml

@@ -16,8 +16,8 @@ env:
   GO_VERSION: ~1.22
   # Taken from https://github.com/kubernetes-sigs/kind/releases/tag/v0.18.0
   # The image here should be listed under 'Images built for this release' for the version of kind in go.mod
-  KIND_NODE_IMAGE: "kindest/node:v1.29.2@sha256:51a1434a5397193442f0be2a297b488b6c919ce8a3931be0ce822606ea5ca245"
-  KIND_OLDEST_NODE_IMAGE: "kindest/node:v1.26.3@sha256:61b92f38dff6ccc29969e7aa154d34e38b89443af1a2c14e6cfbd2df6419c66f"
+  KIND_NODE_IMAGE: "kindest/node:v1.30.4"
+  KIND_OLDEST_NODE_IMAGE: "kindest/node:v1.26.6"
   BASELINE_UPGRADE_VERSION: v2.1.0
 
 jobs:
@@ -291,7 +291,7 @@ jobs:
     strategy:
       matrix:
         rabbitmq-image:
-        - rabbitmq:3.11.0-management
+        - rabbitmq:3.13.0-management
         - rabbitmq:management
     steps:
     - name: Check out code into the Go module directory