Solve peer-dependency warnings on pnpm install

[cindyledev]

In addition to the deprecation warnings mentioned in #3177, we have warnings about missing peer-dependencies

 WARN  Issues with peer dependencies found
.
├─┬ @typescript-eslint/eslint-plugin
│ ├── ✕ missing peer typescript@"*"
│ ├── ✕ missing peer eslint@"^5.0.0 || ^6.0.0 || ^7.0.0"
│ └─┬ @typescript-eslint/experimental-utils
│   ├── ✕ missing peer eslint@"*"
│   ├─┬ @typescript-eslint/typescript-estree
│   │ ├── ✕ missing peer typescript@"*"
│   │ └─┬ tsutils
│   │   └── ✕ missing peer typescript@">=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev || >= 3.5.0-dev || >= 3.6.0-dev || >= 3.6.0-beta || >= 3.7.0-dev || >= 3.7.0-beta"
│   └─┬ eslint-utils
│     └── ✕ missing peer eslint@>=5
├─┬ @typescript-eslint/parser
│ ├── ✕ missing peer typescript@"*"
│ └── ✕ missing peer eslint@"^5.0.0 || ^6.0.0 || ^7.0.0"
├─┬ ts-jest
│ └── ✕ missing peer typescript@">=3.8 <5.0"
├─┬ jest-playwright-preset
│ ├── ✕ missing peer jest-circus@>=26.6.3
│ ├── ✕ missing peer jest-environment-node@>=26.6.3
│ └── ✕ missing peer jest-runner@>=26.6.3
└─┬ ioredis-mock
  └── ✕ missing peer redis-commands@1.x
Peer dependencies that should be installed:
  eslint@">=5.0.0 <6.0.0 || >=6.0.0 <7.0.0 || >=7.0.0 <8.0.0"  jest-environment-node@>=26.6.3                               redis-commands@1.x                                           
  jest-circus@>=26.6.3                                         jest-runner@>=26.6.3                                         typescript@">=3.8.0 <5.0.0"                                  

src/api/posts
└─┬ ioredis-mock
  └── ✕ missing peer redis-commands@1.x
Peer dependencies that should be installed:
  redis-commands@1.x  

src/docs
├─┬ @docusaurus/core
│ └─┬ react-dev-utils
│   └─┬ fork-ts-checker-webpack-plugin
│     └── ✕ missing peer typescript@">= 2.7"
├─┬ @docusaurus/preset-classic
│ ├─┬ @docusaurus/plugin-debug
│ │ └─┬ react-json-view
│ │   └─┬ react-textarea-autosize
│ │     └─┬ use-latest
│ │       ├── ✕ missing peer @types/react@"*"
│ │       └─┬ use-isomorphic-layout-effect
│ │         └── ✕ missing peer @types/react@"*"
│ └─┬ @docusaurus/theme-search-algolia
│   └─┬ @docsearch/react
│     ├── ✕ missing peer @types/react@">= 16.8.0 < 18.0.0"
│     └─┬ @algolia/autocomplete-preset-algolia
│       └── ✕ missing peer @algolia/client-search@^4.9.1
└─┬ mdx-mermaid
  ├── ✕ missing peer unist-util-visit@^2.0.0
  └── ✕ unmet peer mermaid@">= 8.11.0 < 8.12.0": found 8.14.0
Peer dependencies that should be installed:
  @algolia/client-search@^4.9.1    @types/react@">=16.8.0 <18.0.0"  typescript@">= 2.7"              unist-util-visit@^2.0.0          

src/web
├─┬ babel-loader
│ └── ✕ missing peer webpack@>=2
├─┬ terser-webpack-plugin
│ └── ✕ missing peer webpack@^5.1.0
└─┬ next-pwa
  ├─┬ clean-webpack-plugin
  │ └── ✕ missing peer webpack@">=4.0.0 <6.0.0"
  └─┬ workbox-webpack-plugin
    └── ✕ missing peer webpack@"^4.4.0 || ^5.9.0"
Peer dependencies that should be installed:
  webpack@">=5.9.0 <6.0.0"  

Adding this to .npmrc in root only installs missing peer dependencies when we add new dependencies. It does not take care of the missing peer dependencies we currently have.

# pnpm add <pkg> automatically installs any missing peer dependencies as dev dependencies
auto-install-peers=true

Note: Depending on your OS, you may or may not even see these warnings. I get these warnings using AWS EC2 Amazon Linux 2 AMI. Also if you do not see the errors on the master branch, try deleting the pnpm-lock.yaml file.