Catch env in daemon tests

[Nukesor]

Previously, all tasks that were created in daemon tests had an empty envs field.

This lead to problem when running the tests in environments where sleep isn't located in the default $PATH.

By catching the correct $PATH from the environment, this change should fix those tests for these environments.

Part of #342

[codecov-commenter]

Codecov Report

Merging #346 (35448a4) into main (d4f7c25) will increase coverage by 0.09%.
The diff coverage is 83.33%.

❗ Current head 35448a4 differs from pull request most recent head a32a11d. Consider uploading reports for the commit a32a11d to get more accurate results

@@            Coverage Diff             @@
##             main     #346      +/-   ##
==========================================
+ Coverage   74.20%   74.30%   +0.09%     
==========================================
  Files          71       71              
  Lines        4858     4860       +2     
==========================================
+ Hits         3605     3611       +6     
+ Misses       1253     1249       -4     

Impacted Files	Coverage Δ
client/client.rs	47.63% <83.33%> (+0.54%)	⬆️
client/display/mod.rs	42.85% <0.00%> (ø)
client/commands/mod.rs	87.50% <0.00%> (ø)
client/commands/wait.rs	0.00% <0.00%> (ø)
client/display/group.rs	100.00% <0.00%> (ø)
client/display/state.rs	70.61% <0.00%> (ø)
client/display/helper.rs	100.00% <0.00%> (ø)
client/commands/local_follow.rs	65.51% <0.00%> (ø)
client/main.rs	69.38% <0.00%> (+1.99%)	⬆️

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