Update for RabbitMQ 3.13

Fixes #263

Address @pjk25 review comment

Remove OTP 25 since RMQ 3.13 does NOT support it.

Apply fix proposed by @dumbbell

update mk files

Remove 3.11

.github/workflows/release.yml

@@ -7,5 +7,5 @@ jobs:
   release:
     uses: rabbitmq/rabbitmq-lvc-exchange/.github/workflows/plugin-release.yml@main
     with:
-      bazel_otp_name: 25
+      bazel_otp_name: "26_2"
       plugin_name: rabbitmq_delayed_message_exchange

MODULE.bazel

@@ -32,9 +32,9 @@ bazel_dep(
 
 archive_override(
     module_name = "rabbitmq-server",
-    strip_prefix = "rabbitmq-server-main",
+    strip_prefix = "rabbitmq-server-3.13.x",
     urls = [
-        "https://github.com/rabbitmq/rabbitmq-server/archive/refs/heads/main.zip",
+        "https://github.com/rabbitmq/rabbitmq-server/archive/refs/heads/v3.13.x.zip",
     ],
 )