chore: reverted changes to workflows and updated pr template

Author: ClarksonAdam

.github/pull_request_template.md

@@ -1,4 +1,4 @@
-## Pull Request Checklist
+# Pull Request Checklist
 
 ## Ticket Link
 
@@ -14,7 +14,7 @@ https://nhsd-jira.digital.nhs.uk/browse/NPA-XXXX
 -
 -
 
-# How to test?
+## How to test?
 
 <!--- Describe in detail how you tested your changes -->
 <!--- Include details of your testing environment and the tests you ran to see how your change affects other areas of the code etc. -->
@@ -37,3 +37,9 @@ Stages to complete before opening the Pull Request:
 -   [ ] I have reviewed the changes in this PR and they fill all or part of the acceptance criteria of the ticket, and the code is in a mergeable state.
 -   [ ] If there were infrastructure, operational, or build changes, I have made sure there is sufficient evidence that the changes will work.
 -   [ ] I have ensured the changelog has been updated by the submitter, if necessary.
+
+## Post-merge
+
+After merging and deploying changes to the sandbox, Postman collection or spec examples please run the `Run Postman collection` workflow.
+
+This will run the tests within the collection to check that the sandbox is working as expected once deployed.

.github/workflows/run-postman-collection.yml

@@ -0,0 +1,17 @@
+name: Run postman collection
+on:
+    workflow_dispatch:
+jobs:
+    run-postman-collection:
+        runs-on: ubuntu-latest
+        steps:
+            -   name: Check out the repository
+                uses: actions/checkout@v4
+            -   name: Set up Node.js
+                uses: actions/setup-node@v4
+                with:
+                    node-version: '22'
+            -   name: Install Newman
+                run: npm install -g newman
+            -   name: Run Postman Collection
+                run: newman run ./postman/Validate_Relationship_Service_Sandbox.postman_collection.json

.github/workflows/sandbox-checks.yaml

@@ -23,20 +23,3 @@ jobs:
         run: make lint
       - name: Run Sandbox Unit Tests
         run: make test
-        working-directory: ./sandbox
-      - name: Set up Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '22'
-      - name: Install Newman
-        run: npm install -g newman
-      - name: Start dev sandbox
-        run: |
-          make start &
-          sleep 5
-        working-directory: ./sandbox
-      - name: Run Postman Collection
-        run: newman run ./postman/Validate_Relationship_Service_Sandbox.postman_collection.json -d ./postman/dev-variables.json
-      - name: Stop sandbox
-        if: success() || failure()
-        run: pkill -f "poetry run flask"