chore: try actions/setup-node before pnpm/action-setup

[bmish]

I'm seeing a failure with .github/workflows/plan-release.yml:

Run actions/setup-node@v5
Found in cache @ /opt/hostedtoolcache/node/18.20.8/x64
(node:2235) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
Environment details
Error: Unable to locate executable file: pnpm. Please verify either the file path exists or the file can be found within a directory specified by the PATH environment variable. Also check the file mode to verify the file is executable.

Updating to match the order from: https://github.com/pnpm/action-setup?tab=readme-ov-file#use-cache-to-reduce-installation-time

Might have been caused by:

• build(deps): Bump actions/setup-node from 4 to 5 #2330