Revert "chore : bump snyk-docker-plugin to the latest version"

This reverts commit 7949293.

Author: adrobuta

package-lock.json

@@ -47,7 +47,7 @@
     "packageurl-js": "^1.2.1",
     "sleep-promise": "^9.1.0",
     "snyk-config": "5.3.0",
-    "snyk-docker-plugin": "^6.13.7",
+    "snyk-docker-plugin": "6.12.4",
     "source-map-support": "^0.5.21",
     "tunnel": "0.0.6",
     "typescript": "4.9.5",