chore(release): Update release notes heading

This commit changes the heading in the generated release notes.

The heading for the changes section in the `release.yml` workflow has been updated from `## 📋 Changes` to `## What's Changes`.

Author: RahimMahmoudzadeh

.github/workflows/release.yml

@@ -66,7 +66,7 @@ jobs:
               state: 'all'
             });
 
-            let body = `## 📋 Changes\n\n`;
+            let body = `## What's Changes\n\n`;
             for (const issue of issues.data) {
               const fixer = issue.assignee ? issue.assignee.login : issue.user.login;
               body += `#${issue.number} ${issue.title} - Fixed by @${fixer}\n`;