Update README.md

Signed-off-by: Josh Dolitsky <393494+jdolitsky@users.noreply.github.com>

Author: jdolitsky

README.md

@@ -46,7 +46,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: wolfi-dev/wolfi-act@main
         with:
-          packages: curl,apko,cosign,crane
+          packages: grype,trivy
           command: |
             set -x
             grype cgr.dev/chainguard/nginx