ISSUE-45: Add support for Symfony 5.x

[raymondschouten]

No description provided.

[codecov]

Codecov Report

Merging #49 (4017e4e) into 1.3 (0e8e79f) will not change coverage.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##                 1.3       #49   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity        92        92           
===========================================
  Files              8         8           
  Lines            476       476           
===========================================
  Hits             476       476           

Impacted Files	Coverage Δ
src/Exception/FileNotValidException.php	100.00% <ø> (ø)
src/Exception/FormatNotValidException.php	100.00% <ø> (ø)
...c/Exception/PrivateKeyPassPhraseEmptyException.php	100.00% <ø> (ø)
src/File/CryptoFile.php	100.00% <100.00%> (ø)
src/File/KeystoreFile.php	100.00% <100.00%> (ø)
src/File/PemFile.php	100.00% <100.00%> (ø)
src/File/PrivateKeyFile.php	100.00% <100.00%> (ø)
src/File/PublicKeyFile.php	100.00% <100.00%> (ø)

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