minor #1441 [CI] Trim yarn JSON in run-vitest-all (smnandre)

This PR was squashed before being merged into the 2.x branch.

Discussion
----------

[CI] Trim yarn JSON in run-vitest-all

On macOS, `yarn workspaces info` outputs some time/debug info outside the JSON, making it impossible to parse.

Trying to find a way to avoid that without messing with the script / other OS

```diff
-workspaces_info=$(yarn workspaces info)
+workspaces_info=$(yarn workspaces info | sed '1d;$d')
```

cc `@evertharmeling`

Commits
-------

6adb5f6 [CI] Trim yarn JSON in run-vitest-all

Author: weaverryan

bin/run-vitest-all.sh

@@ -49,7 +49,7 @@ processWorkspace() {
 }
 
 # Get all workspace names
-workspaces_info=$(yarn workspaces info)
+workspaces_info=$(yarn -s workspaces info)
 
 # Iterate over each workspace using process substitution
 while IFS= read -r workspace_info; do