Update actions/core dependencies for releases/v2 (#713)

.github/workflows/e2e-cache.yml

@@ -75,7 +75,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: [12, 14, 16]
+        node-version: [14, 16]
     steps:
       - uses: actions/checkout@v2
       - name: Yarn version

.github/workflows/proxy.yml

@@ -14,14 +14,12 @@ on:
 jobs:
   test-proxy:
     runs-on: ubuntu-latest
-    strategy:    
-      fail-fast: false    
     container:
       image: ubuntu:latest
       options: --dns 127.0.0.1
     services:
       squid-proxy:
-        image: datadog/squid:latest
+        image: ubuntu/squid:latest
         ports:
           - 3128:3128
     env: