Include deployment changes in Telegram notifications

.github/workflows/deploy-staging.yml

@@ -30,6 +30,30 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Collect release notes
+        id: release-notes
+        run: |
+          set -euo pipefail
+
+          if [ "${{ github.event_name }}" = "push" ] && [ "${{ github.event.before }}" != "0000000000000000000000000000000000000000" ]; then
+            RANGE="${{ github.event.before }}..${{ github.sha }}"
+          else
+            RANGE="-5"
+          fi
+
+          NOTES="$(git log "$RANGE" --pretty=format:'- %h %s' --no-merges | head -20)"
+          if [ -z "$NOTES" ]; then
+            NOTES="$(git log -1 --pretty=format:'- %h %s')"
+          fi
+
+          {
+            echo "notes<<EOF"
+            echo "$NOTES"
+            echo "EOF"
+          } >> "$GITHUB_OUTPUT"
 
       - name: Setup Go
         uses: actions/setup-go@v5
@@ -187,6 +211,8 @@ jobs:
           Commit: ${{ github.sha }}
           Actor: ${{ github.actor }}
           Image: ${{ env.IMAGE_NAME }}:${{ github.sha }}
+          Updates:
+          ${{ steps.release-notes.outputs.notes }}
           Run: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
           EOF
           )"
@@ -213,6 +239,8 @@ jobs:
           Commit: ${{ github.sha }}
           Actor: ${{ github.actor }}
           Image: ${{ env.IMAGE_NAME }}:${{ github.sha }}
+          Updates:
+          ${{ steps.release-notes.outputs.notes }}
           Run: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
           EOF
           )"