在pnpm6.x版本中，如何缓存依赖

目前遇到一个旧项目，使用node12和pnpm6，准备脚本如下

name: 'Node.js and pnpm Setup'
description: '准备 Node.js 和 pnpm 环境，并安装依赖'

inputs:
  node-version:
    description: "要使用的 Node.js 版本"
    required: false
    default: '12.x'
  pnpm-version:
    description: "要使用的 Pnpm 版本"
    required: false
    default: '6.10'

runs:
  using: "composite"
  steps:
    - name: Setup pnpm
      uses: pnpm/action-setup@v2.0.0
      with:
        version: ${{ inputs.pnpm-version }}

    - name: Expose pnpm config
      shell: bash
      run: |
        echo "STORE_PATH=$(pnpm store path)"
        echo "STORE_PATH=$(pnpm store path)" >> $GITHUB_ENV

    - name: Cache pnpm
      uses: actions/cache@v3
      with:
        path: |
          ${{ env.STORE_PATH }}
          node_modules
        key: ${{ runner.os }}-${{ hashFiles('package.json') }}

    - name: Setup Node
      uses: actions/setup-node@v2
      with:
        node-version: ${{ inputs.node-version }}

    - name: Install dependencies
      shell: bash
      run: pnpm install --frozen-lockfile --prefer-offline --shamefully-hoist

使用如下，但是每次都会重新下载依赖并没有缓存

name: Build

on:
  push:
    tags:
      - v*

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Setup and Install
        uses: ./.github/actions/setup-pnpm

      - name: Build
        run: pnpm build

Start with the local .github/actions/setup-pnpm action and the workflow shown in the issue, focusing on the pnpm store path and the actions/cache step. Check how the Node.js and pnpm setup steps interact with cache restoration, then verify the workflow on a repeated run. Done means the existing pnpm dependencies are restored instead of being downloaded again.