Remove deprecated --path flag from bundle install.

The --path flag has been removed in newer Bundler versions. The ruby/setup-ruby action handles bundler caching automatically.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: dblock

.github/workflows/test.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.entry.ruby }}
-      - run: bundle install --jobs=3 --retry=3 --path=vendor/bundle
+      - run: bundle install --jobs=3 --retry=3
       - run: bundle exec rake spec
         continue-on-error: ${{ matrix.entry.allowed-failure }}
       - name: Specs for when the i18n gem is not available