Unfreeze dep hashesfix_dev_deps_hashes

These hashes are actually modified. For example, to exclude some
dependencies under jruby.

So they should not be frozen.

Without this, running `bin/rake spec:deps` from jruby crashes with:

```
rake aborted!
FrozenError: can't modify frozen Hash
/path/to/bundler/spec/support/rubygems_ext.rb:36:in `dev_setup'
/path/to/bundler/Rakefile:29:in `block in <main>'
/path/to/bundler/Rakefile:14:in `block in invoke'
/path/to/bundler/Rakefile:13:in `invoke'
/path/to/bundler/spec/support/rubygems_ext.rb:98:in `gem_load_and_activate'
/path/to/bundler/spec/support/rubygems_ext.rb:45:in `gem_load'
Tasks: TOP => spec:deps
(See full trace by running task with --trace)
```

0 files changed, 0 insertions, 0 deletions