chore(deps): update dependency postgres to v18.3-4

This backs out the LiveKit v1.10.0 role bump while we investigate MatrixRTC call failures reported in #5076.
The symptoms appear consistent with livekit/livekit#4384, and the upstream fix in livekit/livekit#4389 has not reached a release yet.

requirements.yml

@@ -42,7 +42,7 @@
   version: v10741-2
   name: jitsi
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-livekit-server.git
-  version: v1.10.0-0
+  version: v1.9.12-1
   name: livekit_server
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-ntfy.git
   version: v2.19.2-1
@@ -57,7 +57,7 @@
   version: dd6e15246b7a9a2d921e0b3f9cd8a4a917a1bb2f
   name: playbook_state_preserver
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-postgres.git
-  version: v18.3-1
+  version: v18.3-4
   name: postgres
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-postgres-backup.git
   version: v18-2

roles/custom/matrix-alertmanager-receiver/defaults/main.yml

@@ -11,7 +11,7 @@
 matrix_alertmanager_receiver_enabled: true
 
 # renovate: datasource=docker depName=docker.io/metio/matrix-alertmanager-receiver
-matrix_alertmanager_receiver_version: 2026.3.18
+matrix_alertmanager_receiver_version: 2026.3.25
 
 matrix_alertmanager_receiver_scheme: https
 

roles/custom/matrix-synapse/defaults/main.yml

@@ -1835,7 +1835,7 @@ matrix_synapse_register_user_script_matrix_authentication_service_path: ""
 matrix_synapse_reverse_proxy_companion_enabled: "{{ matrix_synapse_enabled and matrix_synapse_workers_enabled }}"
 
 # renovate: datasource=docker depName=nginx
-matrix_synapse_reverse_proxy_companion_version: 1.29.6-alpine
+matrix_synapse_reverse_proxy_companion_version: 1.29.7-alpine
 
 matrix_synapse_reverse_proxy_companion_base_path: "{{ matrix_synapse_base_path }}/reverse-proxy-companion"
 matrix_synapse_reverse_proxy_companion_confd_path: "{{ matrix_synapse_reverse_proxy_companion_base_path }}/conf.d"