Added timeout to SSHConnector

[LanderOtto]

This commit adds the timeout in the asyncssh.connect() call. The user chooses the time to wait using the connectTimeout option. If the retry is enabled, the wait time increases at each attempt.

Updated documentation checksum because the connectTimeout option was added in the SSHConnector schema

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 71.33%. Comparing base (eb19e9a) to head (6333375).

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
streamflow/cwl/translator.py	0.00%	2 Missing and 2 partials ⚠️
streamflow/deployment/connector/ssh.py	66.66%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #644      +/-   ##
==========================================
- Coverage   71.35%   71.33%   -0.02%     
==========================================
  Files          88       88              
  Lines       11310    11315       +5     
  Branches     1968     1970       +2     
==========================================
+ Hits         8070     8072       +2     
- Misses       2784     2786       +2     
- Partials      456      457       +1     

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