chore: Remove dependency on home crate, use std instead

[sbernauer]

Motivation

We have CI problems related to the home crate (#1839), so I looked up what that crate is doing.

Solution

In it's description it states that Rust 1.85.0 fixed the Windows HOME problems and users are encouraged to use std instead.

So I did exactly that, as kube's MSRV is 1.85.0.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.6%. Comparing base (7c63f56) to head (f175bdc).

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1840     +/-   ##
=======================================
+ Coverage   74.5%   74.6%   +0.1%     
=======================================
  Files         84      84             
  Lines       7877    7877             
=======================================
+ Hits        5867    5869      +2     
+ Misses      2010    2008      -2     

Files with missing lines	Coverage Δ
kube-client/src/config/file_config.rs	77.6% <100.0%> (ø)

... and 2 files with indirect coverage changes

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