fix: Add tx in the path for transifex commands

[UsamaSadiq]

Description

• Add transifex client make command #1889 added new Make command to install transifex client locally.
• To run the client locally, the path for the tx in make pull_translations command was updated.
• Updating the path caused the scheduled pull_translations job to fail on Jenkins.
• Reverted the pull_translations command update and instead added the new client in the PATH to make it accessible everywhere in the directory.

[codecov]

Codecov Report

Base: 94.98% // Head: 94.98% // No change to project coverage 👍

Coverage data is based on head (cb50a1a) compared to base (835c1e2).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1890   +/-   ##
=======================================
  Coverage   94.98%   94.98%           
=======================================
  Files         154      154           
  Lines       17045    17045           
  Branches     1873     1873           
=======================================
  Hits        16190    16190           
  Misses        641      641           
  Partials      214      214           

Flag	Coverage Δ
unittests	94.98% <ø> (ø)

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