[test] fix socat version to 1.7.4.4

[Irving-cl]

This PR changes the installation of socat from using 'apt' to manual installation.

We found the latest socat version 1.8.0.3 has an issue when running with OTBR docker. To avoid the error caused by version and facilitate local development, the PR provides a script to install socat of version 1.7.4.4 and replaces the installation in CI and scripts..

BTW, the installation in install_openthread_binraries is unnecessary because install_common_dependencies will be done anyway.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 43.29%. Comparing base (2b41187) to head (c8dede4).
Report is 942 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2706       +/-   ##
===========================================
- Coverage   55.77%   43.29%   -12.49%     
===========================================
  Files          87      108       +21     
  Lines        6890    13400     +6510     
  Branches        0      963      +963     
===========================================
+ Hits         3843     5801     +1958     
- Misses       3047     7291     +4244     
- Partials        0      308      +308     

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