Update to new ecr get-login-password call

Author: rell-fastly

.github/workflows/build.yml

@@ -20,7 +20,7 @@ jobs:
       uses: actions/checkout@v2
     - name: Run make script
       run: |
-        $(aws ecr get-login --registry-ids 803688608479 --region us-west-2 --no-include-email)
+        aws ecr get-login-password --region us-west-2 | docker login --username AWS --password-stdin 803688608479.dkr.ecr.us-west-2.amazonaws.com
         ./make.sh
       env:
         PROD_ID: ${{ secrets.SIGSCI_PROD_CANONICAL_ID }}