Change default fail_on_trivy_scan to true

Author: kiran1942

.github/workflows/build.yml

@@ -12,7 +12,7 @@ on:
         type: boolean
         description: fail the build if vulnerabilities are found
         required: true 
-        default: false
+        default: true
 jobs:
   build:
     name: Build Image
@@ -102,4 +102,4 @@ jobs:
       with:
         status: ${{ job.status }}
         steps: ${{ toJson(steps) }}
-      if: always()
+      if: always()