Undo changes to CI

.github/workflows/test+deploy.yml

@@ -55,10 +55,17 @@ jobs:
   unit_and_component_tests:
     name: 'Unit and component tests'
     needs: build
-    runs-on: node:20.15.1
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
 
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+          node-version: 20.15.1
+          cache: 'npm'
+
       - name: Install dependencies
         run: npm ci
 
@@ -69,11 +76,15 @@ jobs:
   # End to end tests
   # **********************
   e2e_tests:
-    runs-on: node:20.15.1
+    runs-on: ubuntu-latest
     needs: build
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+          node-version: 20.15.1
 
       - name: Install dependencies
         run: npm ci