add snyk args for updating reports and setting threshold medium

Author: vjdhama

.github/workflows/snyk.yaml

@@ -4,8 +4,10 @@ jobs:
   security:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Run Snyk to check Terraform manifest file for issues
         uses: snyk/actions/iac@master
         env:
           SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
+        with:
+          args: --severity-threshold=high --report