[repo] Add provisional dates for 5.x series

Whilst release dates have been confirmed, the general support end date,
and security support end date have yet to be confirmed.

Author: andrewnicols

data/versions.json

@@ -1,6 +1,42 @@
 {
     "$schema": "../static/schema/versions.json",
     "versions": [
+        {
+            "name": "5.3",
+            "hidden": true,
+            "releaseDate": "5 October 2026",
+            "generalEndDate": "4 October 2027",
+            "securityEndDate": "4 October 2029",
+            "isLTS": true,
+            "codeFreezeDate": "24 August 2026",
+            "releases": [
+                {
+                    "name": "5.3.0",
+                    "releaseDate": "5 October 2026",
+                    "version": 2026100500,
+                    "upgradePath": "https://docs.moodle.org/503/en/Upgrading",
+                    "releaseNoteUrl": false
+                }
+            ]
+        },
+        {
+            "name": "5.2",
+            "hidden": true,
+            "releaseDate": "20 April 2026",
+            "generalEndDate": "19 April 2027",
+            "securityEndDate": "19 October 2027",
+            "isLTS": false,
+            "codeFreezeDate": "9 March 2026",
+            "releases": [
+                {
+                    "name": "5.2.0",
+                    "releaseDate": "20 April 2026",
+                    "version": 2026042000,
+                    "upgradePath": "https://docs.moodle.org/502/en/Upgrading",
+                    "releaseNoteUrl": false
+                }
+            ]
+        },
         {
             "name": "5.1",
             "releaseDate": "6 October 2025",
@@ -2379,4 +2415,4 @@
             "isLTS": false
         }
     ]
-}
+}

src/components/SupportedReleases/index.tsx

@@ -31,18 +31,20 @@ export {
 };
 
 export default function SupportedReleases(): JSX.Element {
-    const rows = getSupportedReleases().map((versionData: majorVersionData) => {
-        const releaseStatus = getReleaseStatus(versionData);
-        return {
-            name: versionData.name,
-            version: getVersionLabel(versionData.name, versionData.isLTS),
-            initialReleaseDate: versionData.releaseDate,
-            generalSupportEnds: versionData.generalEndDate,
-            securitySupportEnds: versionData.securityEndDate,
-            releaseStatus,
-            releaseStatusLabel: getReleaseStatusLabel(releaseStatus),
-        };
-    }).reverse();
+    const rows = getSupportedReleases()
+        .filter((versionData: majorVersionData) => versionData.hidden !== true)
+        .map((versionData: majorVersionData) => {
+            const releaseStatus = getReleaseStatus(versionData);
+            return {
+                name: versionData.name,
+                version: getVersionLabel(versionData.name, versionData.isLTS),
+                initialReleaseDate: versionData.releaseDate,
+                generalSupportEnds: versionData.generalEndDate,
+                securitySupportEnds: versionData.securityEndDate,
+                releaseStatus,
+                releaseStatusLabel: getReleaseStatusLabel(releaseStatus),
+            };
+        }).reverse();
 
     return (
         <MDXProvider>

src/utils/SupportedReleases.ts

@@ -31,6 +31,7 @@ export interface versionInfo {
 
 export interface majorVersionData {
     name: string,
+    hidden?: boolean,
     codeFreezeDate?: string,
     releaseDate: string,
     generalEndDate: string,

static/schema/versions.json

@@ -47,6 +47,9 @@
                     "items": {
                         "$ref": "#/$defs/release"
                     }
+                },
+                "hidden": {
+                    "type": "boolean"
                 }
             },
             "required": [