Add conditional restart support to remaining services

Add change-tracking and restart_necessary computation for:
- matrix-authentication-service (custom role in this repo)
- container-socket-proxy, traefik-certs-dumper, postgres, exim-relay,
  cinny, livekit-server (external roles, bumped in requirements.yml)

Wire all 7 services in group_vars to use their _restart_necessary variable
instead of hardcoded true.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

requirements.yml

@@ -7,10 +7,10 @@
   version: v1.4.3-2.1.1-0
   name: backup_borg
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-cinny.git
-  version: v4.10.2-1
+  version: v4.10.2-2
   name: cinny
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-container-socket-proxy.git
-  version: v0.4.2-1
+  version: v0.4.2-2
   name: container_socket_proxy
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-coturn.git
   version: v4.8.0-1
@@ -30,7 +30,7 @@
   version: v2.6.1-0
   name: etherpad
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-exim-relay.git
-  version: v4.98.1-r0-2-2
+  version: v4.98.1-r0-2-3
   name: exim_relay
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-grafana.git
   version: v11.6.5-6
@@ -42,7 +42,7 @@
   version: v10741-0
   name: jitsi
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-livekit-server.git
-  version: v1.9.11-0
+  version: v1.9.11-1
   name: livekit_server
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-ntfy.git
   version: v2.17.0-0
@@ -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: v18.2-0
+  version: v18.2-1
   name: postgres
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-postgres-backup.git
   version: v18-0
@@ -84,7 +84,7 @@
   version: v3.6.8-3
   name: traefik
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-traefik-certs-dumper.git
-  version: v2.10.0-4
+  version: v2.10.0-5
   name: traefik_certs_dumper
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-valkey.git
   version: v9.0.2-0