web: fix pnpm-workspace.yaml (#4589)

## Motivation

In #4577 I moved the npm packages around, but I forgot to update the
pnpm workspace file.

## Proposal

Update it with the new package paths.

## Test Plan

Tested locally.

## Release Plan

- Nothing to do / These changes follow the usual release cycle.

## Links

- [reviewer
checklist](https://github.com/linera-io/linera-protocol/blob/main/CONTRIBUTING.md#reviewer-checklist)

Author: Twey

.github/workflows/web.yml

@@ -74,6 +74,9 @@ jobs:
     - uses: jetli/[email protected]
       with:
         version: v0.13.1
+    - uses: jetli/[email protected]
+      with:
+        version: 0.2.100
     - name: Install pnpm
       uses: pnpm/action-setup@v4
       with:
@@ -82,6 +85,7 @@ jobs:
     - name: Test the npm packages
       run: |
         cd web
+        pnpm install
         pnpm -r run ci
     - name: Test `linera-views` on the Web
       run: |

web/pnpm-workspace.yaml

@@ -1,3 +1,3 @@
 packages:
-- .
-- signer
+- '@linera/client'
+- '@linera/signer'