Update dependencies after bumping PHP requirement to PHP 7.0.0
Update dependencies after bumping PHP requirement to PHP 7.0.0

Changelogs summary:

 - zendframework/zend-diactoros updated from 1.8.1 to 1.8.6
   See changes: https://github.com/zendframework/zend-diactoros/compare/1.8.1...1.8.6
   Release notes: https://github.com/zendframework/zend-diactoros/releases/tag/1.8.6

 - cakephp/cakephp updated from 3.6.7 to 3.6.11
   See changes: https://github.com/cakephp/cakephp/compare/3.6.7...3.6.11
   Release notes: https://github.com/cakephp/cakephp/releases/tag/3.6.11

 - phpunit/phpunit-mock-objects updated from 5.0.8 to 5.0.10
   See changes: https://github.com/sebastianbergmann/phpunit-mock-objects/compare/5.0.8...5.0.10
   Release notes: https://github.com/sebastianbergmann/phpunit-mock-objects/releases/tag/5.0.10

 - phpspec/prophecy updated from 1.7.6 to 1.8.0
   See changes: https://github.com/phpspec/prophecy/compare/1.7.6...1.8.0
   Release notes: https://github.com/phpspec/prophecy/releases/tag/1.8.0

 - phpunit/phpunit updated from 6.5.9 to 6.5.12
   See changes: https://github.com/sebastianbergmann/phpunit/compare/6.5.9...6.5.12
   Release notes: https://github.com/sebastianbergmann/phpunit/releases/tag/6.5.12

 - league/flysystem updated from 1.0.45 to 1.0.46
   See changes: https://github.com/thephpleague/flysystem/compare/1.0.45...1.0.46
   Release notes: https://github.com/thephpleague/flysystem/releases/tag/1.0.46

 - squizlabs/php_codesniffer updated from 3.3.0 to 3.3.1
   See changes: https://github.com/squizlabs/PHP_CodeSniffer/compare/3.3.0...3.3.1
   Release notes: https://github.com/squizlabs/PHP_CodeSniffer/releases/tag/3.3.1

 - symfony/polyfill-ctype updated from v1.8.0 to v1.9.0
   See changes: https://github.com/symfony/polyfill-ctype/compare/v1.8.0...v1.9.0
   Release notes: https://github.com/symfony/polyfill-ctype/releases/tag/v1.9.0

 - symfony/filesystem updated from v4.1.1 to v4.1.4
   See changes: https://github.com/symfony/filesystem/compare/v4.1.1...v4.1.4
   Release notes: https://github.com/symfony/filesystem/releases/tag/v4.1.4

 - symfony/config updated from v3.4.12 to v3.4.15
   See changes: https://github.com/symfony/config/compare/v3.4.12...v3.4.15
   Release notes: https://github.com/symfony/config/releases/tag/v3.4.15

 - symfony/debug updated from v4.1.1 to v4.1.4
   See changes: https://github.com/symfony/debug/compare/v4.1.1...v4.1.4
   Release notes: https://github.com/symfony/debug/releases/tag/v4.1.4

 - symfony/polyfill-mbstring updated from v1.8.0 to v1.9.0
   See changes: https://github.com/symfony/polyfill-mbstring/compare/v1.8.0...v1.9.0
   Release notes: https://github.com/symfony/polyfill-mbstring/releases/tag/v1.9.0

 - symfony/console updated from v3.4.12 to v3.4.15
   See changes: https://github.com/symfony/console/compare/v3.4.12...v3.4.15
   Release notes: https://github.com/symfony/console/releases/tag/v3.4.15

 - symfony/yaml updated from v3.4.12 to v3.4.15
   See changes: https://github.com/symfony/yaml/compare/v3.4.12...v3.4.15
   Release notes: https://github.com/symfony/yaml/releases/tag/v3.4.15

burzum/cakephp-file-storage