update to latest temp module

[imrehg]

When installing on node v6.3.1, I get this error: npm WARN deprecated [email protected]: graceful-fs v3.0.0 and before will fail on node releases >= v7.0. Please update to graceful-fs@^4.0.0 as soon as possible. Use 'npm ls graceful-fs' to find it in the tree.

Looks like it's a sub-dependency of the temp module used (see below), and the latest temp (0.8.3) already updated to fix this issue.

└─┬ [email protected] 
  ├── [email protected] 
  ├── [email protected] 
  ├── [email protected] 
  └─┬ [email protected] 
    ├── [email protected] 
    └─┬ [email protected] 
      └── [email protected]