turbo

ef9f6b8a - fix: no longer crash for single projects with global dependencies (#5002)

fix: no longer crash for single projects with global dependencies (#5002) ### Description Fixes #4914, this is the pnpm implementation of #4240 Was caused as `pnpm` when calculating ignores touches the file system and will error if `pnpm-workspace.yaml` isn't present. This also avoids failing on the rare case of someone using turbo on a single project with no external dependencies as pnpm won't create a lockfile in this case. ### Testing Instructions Added integration test for a single project using pnpm with global dependencies --------- Co-authored-by: Chris Olszewski <Chris Olszewski>