Add missing failed-vuln-check.md file.

Should get CI passing. Closes #225

Author: tpendragon

.github/failed-vuln-check.md

@@ -0,0 +1,12 @@
+---
+title: Container Vulnerability Scanner Failed
+labels: dls-work-cycle, security
+---
+Trivy Vulnerability Scan failed.
+
+URL: {{ env.WORKFLOW_URL }}
+Output:
+
+```
+{{ env.SCANNER_OUTPUTS }}
+```