Update Express.js (node v16) (#6817)

* Update node version for express

* Update README for express

frameworks/JavaScript/express/README.md

@@ -12,7 +12,7 @@ This is the Express portion of a [benchmarking test suite](../) comparing a vari
 
 ## Infrastructure Software Versions
 The tests were run with:
-* [Node.js v14.17.5](http://nodejs.org/)
+* [Node.js v16.9.1](http://nodejs.org/)
 * [Express 4.17.1](http://expressjs.com/)
 
 ## Resources

frameworks/JavaScript/express/express-mongodb.dockerfile

@@ -1,4 +1,4 @@
-FROM node:14.17.5-slim
+FROM node:16.9.1-slim
 
 COPY ./ ./
 

frameworks/JavaScript/express/express-mysql.dockerfile

@@ -1,4 +1,4 @@
-FROM node:14.17.5-slim
+FROM node:16.9.1-slim
 
 COPY ./ ./
 

frameworks/JavaScript/express/express-postgres.dockerfile

@@ -1,4 +1,4 @@
-FROM node:14.17.5-slim
+FROM node:16.9.1-slim
 
 COPY ./ ./
 

frameworks/JavaScript/express/express.dockerfile

@@ -1,4 +1,4 @@
-FROM node:14.17.5-slim
+FROM node:16.9.1-slim
 
 COPY ./ ./