check for CRLF injection in client (fixes #194)

[Cycloctane]

What do these changes do?

This pr uses patch from stdlib. It makes aioftp client raise errors if commands contain illegal newline characters (CR/LF) to prevent injection.

Are there changes in behavior for the user?

Clients won't be affected unless they have CR/LF in username or password, which is not likely to happen.

Related issue number

Fixes #194

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.92%. Comparing base (2a34aaf) to head (bdbabe5).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #195   +/-   ##
=======================================
  Coverage   97.91%   97.92%           
=======================================
  Files           6        6           
  Lines        2113     2116    +3     
=======================================
+ Hits         2069     2072    +3     
  Misses         44       44           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[pohmelie]

Thank you for the contribution