caddy: Set udp request buffers in sysctl

roles/caddy/tasks/main.yaml

@@ -1,4 +1,14 @@
 ---
+- name: Set sysctl udp buffer sizes for caddy
+  ansible.posix.sysctl:
+    name: "{{ item.key }}"
+    value: "{{ item.value }}"
+    state: present
+    reload: true
+  with_dict:
+    net.core.rmem_max: "7500000"
+    net.core.wmem_max: "7500000"
+
 - name: Ensure legacy caddy apt repository not present
   ansible.builtin.file:
     path: /etc/apt/sources.list.d/caddy-stable.list