fixup: change PVC Ruby working directory to primer_view_components

In theory this should mean we can cache both Primer run dependencies and core ViewComponent run dependencies. This feels better in the long run – it *might* mean we get dependencies twice when there's a version change in ViewComponent, but equally, the previous cache might still be kicking around.

.github/workflows/ci.yml

@@ -110,7 +110,7 @@ jobs:
       with:
         ruby-version: 3.3
         bundler-cache: true
-        working-directory: 'view_component'
+        working-directory: 'primer_view_components'
     - uses: actions/setup-node@v4
       with:
         node-version: 16