update change log script

.github/workflows/generate-release-changelog.yml

@@ -2,7 +2,10 @@ name: Generate Changelog
 permissions:
   contents: write
 
-on: [workflow_dispatch]
+on:
+  push:
+    tags:
+      - "infisical/v*.*.*-postgres"
 
 jobs:
   generate_changelog:
@@ -10,6 +13,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
+        with:
+          fetch-tags: true
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
@@ -24,13 +29,4 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
-      - name: Set git identity
-        run: |
-          git config user.name 'github-actions[bot]'
-          git config user.email 'github-actions[bot]@infisical.noreply.github.com'
-      - name: Save the changelog to file
-        run: | 
-          echo "${{ steps.gen-changelog.outputs.changelog }}" >> CHANGELOG.md
-          git add CHANGELOG.md
-          git commit -m "chore: changelog update" --no-verify
-          git push origin main
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}