Fix Node.js version in webpack workflow for Next.js 16.1 compatibility

[Copilot]

Fix problem Next.js 16.1.0-canary.21 requires Node.js >=20.9.0, but the webpack workflow uses 20.x which can resolve to versions below this threshold (e.g., 18.20.8), causing build failures.

Changes

• Updated Node.js version matrix in .github/workflows/webpack.yml from 20.x to 20.17.0
• Retained 22.x which already satisfies the requirement

   strategy:
     matrix:
-      node-version: [20.x, 22.x]
+      node-version: [20.17.0, 22.x]

The workflow now uses a specific stable version in the 20.x line that meets Next.js version requirements.

Original prompt

Problem

The GitHub Actions workflow is failing because it's using Node.js 18.20.8, but Next.js 16.1.0-canary.21 requires Node.js version >=20.9.0.

Error from job logs:

You are using Node.js 18.20.8. For Next.js, Node.js version ">=20.9.0" is required.
error: script "build" exited with code 1

Solution Required

Update the .github/workflows/webpack.yml file to ensure the workflow uses Node.js version 20.9.0 or higher.

Current workflow configuration:

• File: .github/workflows/webpack.yml
• Current Node.js versions in matrix: [20.x, 22.x]
• The issue is that 20.x can resolve to versions below 20.9.0

Changes needed:

1. Update the Node.js version matrix to use specific versions that meet the requirement (>=20.9.0)
2. Consider using 20.17.0 (latest stable in 20.x line) and 22.x (which is always >=20.9.0)
3. Alternatively, use minimum version 20.9.0 explicitly

The workflow file is located at .github/workflows/webpack.yml with BlobSha: a90f436e3bd674443877e0765516af72641cf97f

This pull request was created from Copilot chat.

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