Update CHANGELOG.md

Reuse a4c40979d2/CHANGELOG.md

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

CHANGELOG.md

@@ -1,3 +1,13 @@
+# 2026-02-16
+
+## matrix-appservice-slack has been removed from the playbook
+
+[matrix-appservice-slack](./docs/configuring-playbook-bridge-appservice-slack.md) has been removed from the playbook, as it has been discontinued because the public Matrix.org Slack bridge has been decommissioned on January 14th, 2026.
+
+The playbook will let you know if you're using any `matrix_appservice_slack_*` variables. You'll need to remove them from `vars.yml` and potentially [uninstall the component manually](./docs/configuring-playbook-bridge-appservice-slack.md#uninstalling-the-component-manually).
+
+**Note**: Bridging to [Slack](https://slack.com) can also happen via the [mautrix-slack](./docs/configuring-playbook-bridge-mautrix-slack.md) bridge supported by the playbook.
+
 # 2026-02-13
 
 ## Conditional service restart for `install-*` commands

roles/custom/matrix_playbook_migration/tasks/validate_config.yml

@@ -579,7 +579,7 @@
 
       The following variables in your configuration need to be removed: {{ lookup('ansible.builtin.varnames', '^matrix_appservice_slack_.+', wantlist=True) | join(', ') }}
 
-      Bridging to Slack can also happen via mautrix-slack, supported by the playbook. See `docs/configuring-playbook-bridge-mautrix-slack.md` for more information.
+      You might probably wish to have a look at mautrix-slack, another bridge to Slack. Refer to `docs/configuring-playbook-bridge-mautrix-slack.md` for more information.
   when: "lookup('ansible.builtin.varnames', '^matrix_appservice_slack_.+', wantlist=True) | length > 0"
 
 - name: (Deprecation) Catch and report matrix-appservice-webhooks variables