[IMP] supported_versions: release saas-18.4

closes odoo/documentation#14014

Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com>

conf.py

@@ -232,6 +232,7 @@ sphinx.transforms.i18n.docname_to_domain = (
 # option. If a provided version has no label, the version string is used as label.
 versions_names = {
     'master': "Master",
+    'saas-18.4': "Odoo 18.4",
     'saas-18.3': "Odoo 18.3",
     'saas-18.2': "Odoo 18.2",
     'saas-18.1': "Odoo 18.1",

content/administration/supported_versions.rst

@@ -31,6 +31,12 @@ This matrix shows the support status of every version.
      - On-Premise
      - Release date
      - End of support
+   * - Odoo SaaS 18.4
+     - |green|
+     - N/A
+     - N/A
+     - July 2025
+     -
    * - Odoo SaaS 18.3
      - |green|
      - N/A