fix: bump snyk-docker-plugin

Contains a fix for Go app vuln scanning, see [snyk/snyk-docker-plugin#461](snyk/snyk-docker-plugin#461)

Author: Ramon Rüttimann

package-lock.json

@@ -48,7 +48,7 @@
     "needle": "^3.0.0",
     "sleep-promise": "^9.1.0",
     "snyk-config": "5.1.0",
-    "snyk-docker-plugin": "^5.6.2",
+    "snyk-docker-plugin": "^5.6.3",
     "source-map-support": "^0.5.21",
     "tunnel": "0.0.6",
     "typescript": "^4.7.4",