Update symfony to 3.4.41

[phil-davis]

composer update
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Package operations: 0 installs, 8 updates, 0 removals
  - Updating symfony/polyfill-ctype (v1.15.0 => v1.17.0): Loading from cache
  - Updating symfony/filesystem (v3.4.40 => v3.4.41): Loading from cache
  - Updating symfony/options-resolver (v3.4.40 => v3.4.41): Loading from cache
  - Updating symfony/polyfill-php70 (v1.15.0 => v1.17.0): Loading from cache
  - Updating symfony/inflector (v3.4.40 => v3.4.41): Loading from cache
  - Updating symfony/property-access (v3.4.40 => v3.4.41): Loading from cache
  - Updating symfony/property-info (v3.4.40 => v3.4.41): Loading from cache
  - Updating symfony/serializer (v3.4.40 => v3.4.41): Loading from cache
Generating autoload files

[codecov[bot]]

Codecov Report

Merging #163 into master will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #163   +/-   ##
=========================================
  Coverage     85.67%   85.67%           
  Complexity      235      235           
=========================================
  Files            36       36           
  Lines          1117     1117           
=========================================
  Hits            957      957           
  Misses          160      160           

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