Log Message:
Update ruby-addressable package to 2.2.6.

## Addressable 2.2.6
- changed the way ambiguous paths are handled
- fixed bug with frozen URIs
- https supported in heuristic parsing

## Addressable 2.2.5
- 'parsing' a pre-parsed URI object is now a dup operation
- introduced conditional support for libidn
- fixed normalization issue on ampersands in query strings
- added additional tests around handling of query strings

## Addressable 2.2.4
- added origin support from draft-ietf-websec-origin-00
- resolved issue with attempting to navigate below root
- fixed bug with string splitting in query strings

## Addressable 2.2.3
- added :flat_array notation for query strings