feat: attempt to trigger terraform automatically after be

.github/workflows/deploy.yml

@@ -3,6 +3,10 @@ on:
     branches:
       - 'main'
   workflow_dispatch:
+  workflow_run:
+    workflows: [Terraform] # Name of GitHub workflow to trigger in target repository
+    types:
+      - completed
 
 env:
   AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
@@ -46,3 +50,17 @@ jobs:
 
       - name: Copy GraphQL schema to S3
         run: aws s3 cp --content-type text/plain schema.graphql s3://d2e-lambda-s3-bucket
+  trigger-terraform-workflow:
+    if: github.event.workflow_run.conclusion == 'success' # Run only when workflow run has succeeded, i.e. all jobs have succeeded
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v6
+        with:
+          github-token: ${{ secrets.PAT }} # Fine-grained GitHub PAT that was saved as repository secret
+          script: |
+            await github.rest.actions.createworkflowDispatch({
+                owner: 'CapgeminiInventUK',
+                repo: 'donate-to-educate-terraform',
+                workflow_id: 'terraform.yml',
+                ref: 'main'
+            })