Upgrade symfony to 5.2

[akondas]

No description provided.

[codecov]

Codecov Report

Merging #379 (bdac76b) into master (697aaf7) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master     #379   +/-   ##
=========================================
  Coverage     99.35%   99.35%           
  Complexity     1855     1855           
=========================================
  Files           297      297           
  Lines          5858     5858           
=========================================
  Hits           5820     5820           
  Misses           38       38           

Impacted Files	Coverage Δ	Complexity Δ
src/Repository/ConfigRepository.php	100.00% <ø> (ø)	4.00 <0.00> (ø)
src/Repository/OrganizationRepository.php	100.00% <ø> (ø)	7.00 <0.00> (ø)
src/Repository/PackageRepository.php	100.00% <ø> (ø)	5.00 <0.00> (ø)
src/Repository/ScanResultRepository.php	100.00% <ø> (ø)	2.00 <0.00> (ø)
src/Repository/UserRepository.php	100.00% <ø> (ø)	15.00 <0.00> (ø)
src/Service/Mailer/SymfonyMailer.php	100.00% <100.00%> (ø)	6.00 <0.00> (ø)

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