Chore: Use Vault secrets in changelog.yml (#104721)

* baldm0mma/ update to use vault

* Update .github/workflows/changelog.yml

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

* Update .github/workflows/changelog.yml

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

---------

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

.github/workflows/changelog.yml

@@ -22,11 +22,6 @@ on:
         required: false
         default: false
         type: boolean
-    secrets:
-      GRAFANA_DELIVERY_BOT_APP_ID:
-        required: true
-      GRAFANA_DELIVERY_BOT_APP_PEM:
-        required: true
 
   workflow_dispatch:
     inputs:
@@ -51,7 +46,9 @@ on:
         default: false
         type: boolean
 
-permissions: {}
+permissions:
+  contents: read
+  id-token: write
 
 jobs:
   main:
@@ -66,12 +63,19 @@ jobs:
       contents: write
       pull-requests: write
     steps:
+      - name: "Get vault secrets"
+        id: vault-secrets
+        uses: grafana/shared-workflows/actions/get-vault-secrets@main
+        with:
+          # Secrets placed in the ci/data/repo/grafana/grafana/delivery-bot-app path in Vault
+          repo_secrets: |
+            GRAFANA_DELIVERY_BOT_APP_PEM=delivery-bot-app:PRIVATE_KEY
       - name: "Generate token"
         id: generate_token
         uses: tibdex/github-app-token@b62528385c34dbc9f38e5f4225ac829252d1ea92
         with:
-          app_id: ${{ secrets.GRAFANA_DELIVERY_BOT_APP_ID }}
-          private_key: ${{ secrets.GRAFANA_DELIVERY_BOT_APP_PEM }}
+          app_id: ${{ vars.DELIVERY_BOT_APP_ID }}
+          private_key: ${{ env.GRAFANA_DELIVERY_BOT_APP_PEM }}
       - name: "Checkout Grafana repo"
         uses: "actions/checkout@v4"
         with: