CI: Fix artefact uploads

With the current version of the action, we must avoid overriding
artefacts in matrix builds.

.github/actions/test-code/action.yml

@@ -5,6 +5,10 @@ inputs:
     description: Name of branch to store baseline on
     required: false
     default: master
+  node:
+    description: The version of Node.js to use.
+    required: false
+    default: 18
 runs:
   using: composite
   steps:
@@ -16,11 +20,11 @@ runs:
     - name: Upload test results
       uses: actions/upload-artifact@master
       with:
-        name: test-results
+        name: test-results-${{ inputs.node }}
         path: .jest-results.json
 
     - name: Upload coverage report
       uses: actions/upload-artifact@master
       with:
-        name: coverage-report
+        name: coverage-report-${{ inputs.node }}
         path: coverage

.github/workflows/change-assurance.yml

@@ -39,6 +39,8 @@ jobs:
 
       - name: Run unit tests
         uses: ./.github/actions/test-code
+        with:
+          node: ${{ matrix.node }}
 
   libs:
     name: Build libraries