chore: add ci caching

Author: saleel

.github/workflows/e2e.yml

@@ -7,13 +7,14 @@ on:
 jobs:
   test:
     timeout-minutes: 120
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-16-cores
     steps:
     - uses: actions/checkout@v4
 
     - uses: actions/setup-node@v4
       with:
         node-version: lts/*
+        cache: 'yarn'
 
     - name: Set up Docker
       uses: docker/setup-buildx-action@v2
@@ -31,18 +32,28 @@ jobs:
         aztec-up 0.87.2 
         aztec start --sandbox &
 
-    - name: Compile contracts
-      run: script -e -c "${AZTEC_NARGO:-aztec-nargo} compile"
-      working-directory: ./contracts
+    - name: Cache Playwright browsers
+      uses: actions/cache@v3
+      id: playwright-cache
+      with:
+        path: ~/.cache/ms-playwright
+        key: playwright-${{ runner.os }}-${{ hashFiles('**/package-lock.json', '**/yarn.lock') }}
+        restore-keys: |
+          playwright-${{ runner.os }}-
 
     - name: Install dependencies
       working-directory: ./app
       run: npm install -g yarn && yarn
 
     - name: Install Playwright Browsers
+      if: steps.playwright-cache.outputs.cache-hit != 'true'
       working-directory: ./app
       run: yarn playwright install --with-deps
 
+    - name: Compile contracts
+      run: script -e -c "${AZTEC_NARGO:-aztec-nargo} compile"
+      working-directory: ./contracts
+
     - name: Deploy contracts
       working-directory: ./app
       run: yarn deploy-contracts