EDIT-938: Upgrade Project Watchtower to Node 18

[DownUndaDev]

What

Upgrade Project Watchtower and all it's internal packages and dependencies to Node 18.

Why

https://wanews.atlassian.net/browse/EDIT-938

How

• Upgraded project to Node 18
• Upgraded to Webpack5
• Upgraded all surrounding dependencies to match
• Fixed up type errors within the codebase

Project Version Changes

ROOT

• @babel/core 7.11.6 -> 7.12.17
• @babel/runtime + 7.12.17
• @types/assets-webpack-plugin 3.9.0 -> 7.1.5
• @types/express 4.17.8 -> 4.17.21
• @types/html-webpack-plugin 3.2.3 -> 3.2.9
• @types/node 14.11.1 -> 18.17.0
• @types/webpack-dev-middleware -
• @typescript-eslint/eslint-plugin 4.1.1 -> 7.12.0
• @typescript-eslint/parser 4.1.1 -> 7.12.0
• eslint 7.9.0 -> 8.56.0
• eslint-plugin-react 7.20.6 -> 7.34.0
• eslint-plugin-react-hooks 4.1.2 -> 4.6.0
• jest 26.4.2 -> 29.7.0
• tsjest 26.4.0 -> 29.1.4
• tslib 2.0.1 -> 2.6.2
• typescript 4.0.3 -> 5.4.2
• url + 0.11.3
• util + 0.12.5
• webpack 4.44.2 -> 5.0.0

PACKAGES/CLI

• @types/webpack-dev-middleware -
• @types/assets/webpack-plugin + 7.1.5
• file-loader 6.1.0 -> 6.2.0
• html-webpack-plugin 4.4.1 -> 5.6.0
• tsconfig-paths-webpack-plugin 3.3.0 -> 4.1.0
• webpack 4.44.2 -> 5.0.0
• webpack-bundle-analyzer 3.9.0 -> 4.10.0
• webpack-dev-middleware 3.7.2 -> 7.2.0
• webpack-hot-middleware 2.25.1 -> 2.26.0
• webpack-merge 5.1.4 -> 5.10.0

PACKAGES/RUNTIME

• tslib 2.0.1 -> 2.6.2

EXAMPLES/BUNDLE-SPLITTING

• @loadable/component 5.13.2 -> 5.16.4
• @loadable/server 5.13.2 -> 5.16.5
• @loadable/webpack-plugin 5.13.0 -> 5.15.2
• @types/loadable__component 5.13.0 -> 5.13.9
• @types/loadable__server 5.12.2 -> 5.12.11
• webpack 4.44.2 -> 5.0.0

EXAMPLES/SSR-WITH-SASS

• optimize-css-assets-webpack-plugin 5.0.4 -> css-minimizer-webpack-plugin 7.0.0
• node-sass 4.14.1 -> 8.0.0
• postcss 8.2.10 -> 8.4.38
• postcss-loader 4.0.2 -> 8.1.1
• sass-loader 10.0.2 -> 14.2.1
• webpack 4.44.2 -> 5.0.0

[DownUndaDev]

Have confirmed the running state of each and every command within the root package.json