Update setup-java for Microsoft's Build of OpenJDK: now pointing task to CDN that is always up-to-date (#1236)

* Updated microsoft openjdk setup-java action

* Update generated distribution

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Applied new fixes from npm run check

* Update generated distribution

---------

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

src/distributions/microsoft/installer.ts

@@ -8,7 +8,6 @@ import {
   cacheJdkDir,
   extractJdkFile,
   getDownloadArchiveExtension,
-  getGitHubHttpHeaders,
   renameWinArchive
 } from '../../util.js';
 import * as gpg from '../../gpg.js';
@@ -128,19 +127,11 @@ export class MicrosoftDistributions extends JavaBase {
   }
 
   private async getAvailableVersions(): Promise<tc.IToolRelease[] | null> {
-    // TODO get these dynamically!
-    // We will need Microsoft to add an endpoint where we can query for versions.
-    const owner = 'actions';
-    const repository = 'setup-java';
-    const branch = 'main';
-    const filePath =
-      'src/distributions/microsoft/microsoft-openjdk-versions.json';
-
     let releases: tc.IToolRelease[] | null = null;
-    const fileUrl = `https://api.github.com/repos/${owner}/${repository}/contents/${filePath}?ref=${branch}`;
-
-    const headers = getGitHubHttpHeaders();
+    const fileUrl = `https://aka.ms/download-jdk/microsoft-openjdk-versions.json`;
 
+    // Avoid leaking the GitHub token to a non-GitHub host (aka.ms redirects to a CDN).
+    const headers = {accept: 'application/json'};
     let response: TypedResponse<tc.IToolRelease[]> | null = null;
 
     if (core.isDebug()) {