ci: Update auto-release LTS branch (#9969)

Author: mtrezza

.releaserc.js

@@ -34,7 +34,8 @@ async function config() {
   console.log(`Running on branch: ${branch}`);
 
   // Set changelog file
-  const changelogFile = `./changelogs/CHANGELOG_${branch}.md`;
+  const changelogFileSuffix = branch.match(/release-\d+\.x\.x/) ? 'release' : branch;
+  const changelogFile = `./changelogs/CHANGELOG_${changelogFileSuffix}.md`;
   // eslint-disable-next-line no-console
   console.log(`Changelog file output to: ${changelogFile}`);
 
@@ -46,9 +47,8 @@ async function config() {
       'release',
       { name: 'alpha', prerelease: true },
       // { name: 'beta', prerelease: true },
-      'next-major',
       // Long-Term-Support branch
-      'release-8.x.x',
+      { name: 'release-9.x.x', range: '9.x.x', channel: '9.x.x' },
     ],
     dryRun: false,
     debug: true,