Bump twig/twig from 2.4.7 to 2.4.8

[dependabot-preview[bot]]

Bumps twig/twig from 2.4.7 to 2.4.8.

Changelog

*Sourced from twig/twig's [changelog](https://github.com/twigphp/Twig/blob/2.x/CHANGELOG).* > * 2.4.9 (2018-XX-XX) > > * n/a > > * 2.4.8 (2018-04-02) > > * fixed a regression when using the "default" filter or the "defined" test on non-existing arrays > > * 2.4.7 (2018-03-20) > > * optimized runtime performance > * optimized parser performance by inlining the constant values > * fixed block names unicity > * fixed counting children of SimpleXMLElement objects > * added missing else clause to avoid infinite loops > * fixed .. (range operator) in sandbox policy > > * 2.4.6 (2018-03-03) > > * fixed a regression in the way the profiler is registered in templates > > * 2.4.5 (2018-03-02) > > * optimized the performance of calling an extension method at runtime > * optimized the performance of the dot operator for array and method calls > * added an exception when using "===" instead of "same as" > * fixed possible array to string conversion concealing actual error > * made variable names deterministic in compiled templates > * fixed length filter when passing an instance of IteratorAggregate > * fixed Environment::resolveTemplate to accept instances of TemplateWrapper > > * 2.4.4 (2017-09-27) > > * added Twig_Profiler_Profile::reset() > * fixed use TokenParser to return an empty Node > * added RuntimeExtensionInterface > * added circular reference detection when loading templates > * added support for runtime loaders in IntegrationTestCase > * fixed deprecation when using Twig_Profiler_Dumper_Html > * removed [**final**](https://github.com/final) from Twig_Profiler_Dumper_Text > > * 2.4.3 (2017-06-07) > > * fixed namespaces introduction > > * 2.4.2 (2017-06-05) > > * fixed namespaces introduction > > * 2.4.1 (2017-06-05) > ... (truncated)

Commits

- [`7b604c8`](https://github.com/twigphp/Twig/commit/7b604c89da162034bdf4bb66310f358d313dd16d) prepared the 2.4.8 release - [`e30cc13`](https://github.com/twigphp/Twig/commit/e30cc13489cf053830118f6a1d9d5db19282bcb6) bug [#2671](https://github-redirect.dependabot.com/twigphp/Twig/issues/2671) Fix regression (fabpot) - [`0c2cdf2`](https://github.com/twigphp/Twig/commit/0c2cdf2f4657c26a675a036b64893a9d6e51dbe9) fixed regression - [`8de61ce`](https://github.com/twigphp/Twig/commit/8de61cef415f17dac3b4b1ddff37b011de832250) simplified tests - [`092871a`](https://github.com/twigphp/Twig/commit/092871ad2d511b29191f4684bbd6b803e2f80aed) bumped version to 2.4.8-DEV - See full diff in [compare view](https://github.com/twigphp/Twig/compare/v2.4.7...v2.4.8)

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[dependabot-preview[bot]]

Looks like twig/twig is up-to-date now, so this is no longer needed.