Update babel, jest, webpack bits

This should fix the handlebars and serialize-javascript
	security alerts on GH at least.

	It also updates the node requirement (I think through the
	jest update this was necessary) - somebody should check
	if we can actually make	the jump.

client/.nvmrc

@@ -1 +1 @@
-v8.12.0
+v10.19.0

client/Dockerfile

@@ -1,7 +1,7 @@
 # Changes to this file will not take effect in CI
 # until the image version in the CI config is updated. See
 # https://github.com/weaveworks/scope/blob/master/.circleci/config.yml#L11
-FROM node:8.12
+FROM node:10.19
 ENV NPM_CONFIG_LOGLEVEL=warn
 ENV NPM_CONFIG_PROGRESS=false
 ENV XDG_CACHE_HOME=/home/weave/scope/.cache

client/package.json

@@ -7,7 +7,7 @@
   "private": true,
   "main": "index.js",
   "dependencies": {
-    "@babel/polyfill": "^7.6.0",
+    "@babel/polyfill": "^7.8.7",
     "babel-plugin-lodash": "3.3.4",
     "classnames": "2.2.6",
     "d3-array": "2.3.1",
@@ -49,16 +49,16 @@
     "xterm": "3.14.5"
   },
   "devDependencies": {
-    "@babel/cli": "^7.7.0",
-    "@babel/core": "^7.7.2",
-    "@babel/plugin-proposal-class-properties": "^7.7.0",
-    "@babel/plugin-proposal-object-rest-spread": "^7.6.2",
-    "@babel/preset-env": "^7.6.0",
-    "@babel/preset-react": "^7.7.0",
+    "@babel/cli": "^7.8.4",
+    "@babel/core": "^7.8.7",
+    "@babel/plugin-proposal-class-properties": "^7.8.3",
+    "@babel/plugin-proposal-object-rest-spread": "^7.8.3",
+    "@babel/preset-env": "^7.8.7",
+    "@babel/preset-react": "^7.8.3",
     "@fortawesome/fontawesome-free": "^5.10.1",
     "autoprefixer": "9.6.1",
-    "babel-eslint": "10.0.3",
-    "babel-jest": "25.0.0",
+    "babel-eslint": "10.1.0",
+    "babel-jest": "25.1.0",
     "babel-loader": "^8.0.6",
     "babel-plugin-transform-class-properties": "6.24.1",
     "babel-plugin-transform-object-rest-spread": "6.26.0",
@@ -75,8 +75,8 @@
     "html-webpack-plugin": "3.2.0",
     "http-proxy": "1.16.2",
     "http-proxy-rules": "1.1.1",
-    "jest": "25.0.0",
-    "jest-cli": "25.0.0",
+    "jest": "25.1.0",
+    "jest-cli": "25.1.0",
     "json-loader": "0.5.7",
     "mockdate": "2.0.2",
     "postcss-loader": "3.0.0",
@@ -90,10 +90,10 @@
     "stylelint-processor-styled-components": "1.8.0",
     "url": "0.11.0",
     "url-loader": "0.6.2",
-    "webpack": "4.41.2",
-    "webpack-cli": "^3.3.0",
-    "webpack-dev-middleware": "3.1.3",
-    "webpack-hot-middleware": "2.22.2"
+    "webpack": "4.42.0",
+    "webpack-cli": "^3.3.11",
+    "webpack-dev-middleware": "3.7.2",
+    "webpack-hot-middleware": "2.25.0"
   },
   "scripts": {
     "build": "webpack --config webpack.production.config.js",
@@ -127,6 +127,6 @@
     ]
   },
   "engines": {
-    "node": "^8.12.0"
+    "node": "^10.19.0"
   }
 }