chore: pin sha512 hash of pnpm@9.15.5 package to workaround npm registry key issue

[shuuji3]

I'm going to take the same approach as vitejs/vite#19341. I guess Netlify build worker preinstalls corepack somewhere but we couldn't find how to adjust the corepack installation in netlify.toml. In this way, we can (hopefully) avoid touching corepack installation.

As a note, the sha512 hash can be calculated like this:

> npm view pnpm@9.15.5 dist.tarball
https://registry.npmjs.org/pnpm/-/pnpm-9.15.5.tgz

> curl -sL $(npm view pnpm@9.15.5 dist.tarball) | shasum -a 512
845196026aab1cc3f098a0474b64dfbab2afe7a1b4e91dd86895d8e4aa32a7a6d03049e2d0ad770bbe4de023a7122fb68c1a1d6e0d033c7076085f9d5d4800d4 

[netlify]

✅ Deploy Preview for elk-zone ready!

Name	Link
🔨 Latest commit	e33c09b
🔍 Latest deploy log	https://app.netlify.com/sites/elk-zone/deploys/67a20d3479e1b40008fb45e6
😎 Deploy Preview	https://deploy-preview-3187--elk-zone.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[netlify]

✅ Deploy Preview for elk-docs canceled.

Name	Link
🔨 Latest commit	e33c09b
🔍 Latest deploy log	https://app.netlify.com/sites/elk-docs/deploys/67a20d34fcb56100084f9ebd

[userquin]

For Windows using power shell 3.0+ (requires deleting the downloaded file, I don't have time to remove it 💀):

powershell -command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12;  iwr -outf  \"pnpm-9.15.5.tgz\" \"https://registry.npmjs.org/pnpm/-/pnpm-9.15.5.tgz\"" && powershell "Get-FileHash -Algorithm SHA512 -LiteralPath pnpm-9.15.5.tgz | Format-List -Property Hash | Out-String"

🫠 😵‍

If you download the tgz file manually you can run this command from Command Prompt:

certutil -hashfile ./pnpm-9.15.5.tgz SHA512

(there is no wget on windows)