Fixing config modifications using an attribute

[msmakouz]

Closes: #67

1. If the configuration file is used in the bootloader's boot method, its modification in the test using the Spiral\Testing\Attribute\Config attribute causes an exception:

Spiral\Config\Exception\ConfigDeliveredException: Unable to patch config `...`, config object has already been delivered.

However, configuration files should be ready for use by this point. The config modification has been fixed, now it is done before the boot methods are executed.

2. The spiral/framework has been added to require-dev. It is necessary for tests in this package, but was not explicitly required, it was in spiral/roadrunner-bridge until version 3.2.0:
   spiral/roadrunner-bridge@3.1.0...3.2.0
   Now it's not there and the tests are failing due to its absence.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9364cbc) 43.37% compared to head (500f700) 43.19%.

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x      #69      +/-   ##
============================================
- Coverage     43.37%   43.19%   -0.18%     
- Complexity      329      330       +1     
============================================
  Files            34       34              
  Lines          1132     1139       +7     
============================================
+ Hits            491      492       +1     
- Misses          641      647       +6     

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