Bumping dependency to ProxyManager to allow testing against the new 0.5.x branch changes
minor #9358 Bumping dependency to ProxyManager to allow testing against the new 0.5.x versions (Ocramius)

This PR was submitted for the 2.4-dev branch but it was merged into the 2.4 branch instead (closes #9358).

Discussion
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Bumping dependency to ProxyManager to allow testing against the new 0.5.x versions

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | no (looks like an unrelated failure, though)
| Fixed tickets |
| License       | MIT
| Doc PR        |

Nothing to see here. Move along.

Commits
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5377992 Bumping dependency to ProxyManager to allow testing against the new 0.5.x branch changes