Update jeremiah-k/mmrelay Docker tag to v1.3.8

roles/custom/matrix-bridge-meshtastic-relay/defaults/main.yml

@@ -10,7 +10,7 @@
 matrix_meshtastic_relay_enabled: true
 
 # renovate: datasource=docker depName=jeremiah-k/mmrelay packageName=ghcr.io/jeremiah-k/mmrelay
-matrix_meshtastic_relay_version: 1.3.7
+matrix_meshtastic_relay_version: 1.3.8
 matrix_meshtastic_relay_container_image: "{{ matrix_meshtastic_relay_container_image_registry_prefix }}jeremiah-k/mmrelay:{{ matrix_meshtastic_relay_version }}"
 matrix_meshtastic_relay_container_image_registry_prefix: "{{ matrix_meshtastic_relay_container_image_registry_prefix_upstream }}"
 matrix_meshtastic_relay_container_image_registry_prefix_upstream: "{{ matrix_meshtastic_relay_container_image_registry_prefix_upstream_default }}"