build: bump pnpm version to v9

- update package.json
  - update "engines" field
  - add "packageManager" field for use with corepack
- update workflow jobs
  - remove "version" input for "pnpm/setup-action" as the action will
    use the "packageManager" field from `package.json`
- update pnpm-lock.yaml

An environment variable "ENABLE_EXPERIMENTAL_COREPACK" was added to the
build environment on Vercel. This makes sure that Vercel will use
corepack which will ensure the correct version of pnpm is used.

Author: matijs

.github/workflows/continuous-deployment.yml

@@ -16,8 +16,6 @@ jobs:
 
       - name: Install pnpm package manager
         uses: pnpm/action-setup@v3.0.0
-        with:
-          version: 8.14
 
       - name: Set up Node.js version
         uses: actions/setup-node@v4.0.2
@@ -40,8 +38,6 @@ jobs:
 
       - name: Install pnpm package manager
         uses: pnpm/action-setup@v3.0.0
-        with:
-          version: 8.14
 
       - name: Set up Node.js version
         uses: actions/setup-node@v4.0.2
@@ -67,8 +63,6 @@ jobs:
 
       - name: Install pnpm package manager
         uses: pnpm/action-setup@v3.0.0
-        with:
-          version: 8.14
 
       - name: Set up Node.js version
         uses: actions/setup-node@v4.0.2
@@ -115,8 +109,6 @@ jobs:
 
       - name: Install pnpm package manager
         uses: pnpm/action-setup@v3.0.0
-        with:
-          version: 8.14
 
       - name: Set up Node.js version
         uses: actions/setup-node@v4.0.2
@@ -166,8 +158,6 @@ jobs:
 
       - name: Install pnpm package manager
         uses: pnpm/action-setup@v3.0.0
-        with:
-          version: 8.14
 
       - name: Set up Node.js version
         uses: actions/setup-node@v4.0.2

package.json

@@ -10,7 +10,7 @@
   "private": true,
   "engines": {
     "node": "^20",
-    "pnpm": "^8"
+    "pnpm": "^9"
   },
   "workspaces": [
     "./packages/*",
@@ -75,5 +75,6 @@
   },
   "dependencies": {
     "http-server": "14.1.1"
-  }
+  },
+  "packageManager": "pnpm@9.1.1+sha256.9551e803dcb7a1839fdf5416153a844060c7bce013218ce823410532504ac10b"
 }