Add Snyk scans to CI pipeline

https://trello.com/c/RPICx1Qm/3366-add-snyk-sast-and-sca-scans-to-all-govuk-repos-2

Author: MuriloDalRi

.github/workflows/ci.yml

@@ -12,6 +12,11 @@ on:
         type: string
 
 jobs:
+  snyk-security:
+    name: SNYK security analysis
+    uses: alphagov/govuk-infrastructure/.github/workflows/snyk-security.yml@main
+    secrets: inherit
+  
   codeql-sast:
     name: CodeQL SAST scan
     uses: alphagov/govuk-infrastructure/.github/workflows/codeql-analysis.yml@main