ci: use proxyLocalhost action input in Sauce Connect CI workflow

The saucelabs/sauce-connect-action@v3 action accepts 'proxyLocalhost' as an input rather than 'args'.

Author: alan-agius4

.github/workflows/ci.yml

@@ -225,7 +225,7 @@ jobs:
           accessKey: ${{ secrets.SAUCE_ACCESS_KEY }}
           region: us-west-1
           tunnelName: ${{ env.SAUCE_TUNNEL_IDENTIFIER }}
-          args: --proxy-localhost allow
+          proxyLocalhost: allow
       - name: Run E2E Browser tests
         env:
           SAUCE_USERNAME: ${{ vars.SAUCE_USERNAME }}