fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN11-DPKG-2847942
- https://snyk.io/vuln/SNYK-DEBIAN11-LIBTASN16-3061097
- https://snyk.io/vuln/SNYK-UPSTREAM-NODE-3035795
- https://snyk.io/vuln/SNYK-UPSTREAM-NODE-3326683
- https://snyk.io/vuln/SNYK-UPSTREAM-NODE-3329555

Dockerfile

@@ -1,5 +1,5 @@
 # FROM node:6-stretch
-FROM node:16.8.0-bullseye-slim
+FROM node:16.20.1-bullseye-slim
 
 RUN mkdir /usr/src/goof
 RUN mkdir /tmp/extracted_files