Address deepsource findings

[frenck]

Proposed Changes

Addresses a couple of deepsource comments.

[codecov]

Codecov Report

Merging #257 (444e4da) into main (e3adba7) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #257   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            9         9           
  Lines          280       280           
  Branches        17        17           
=========================================
  Hits           280       280           

Impacted Files	Coverage Δ
src/adguardhome/adguardhome.py	100.00% <100.00%> (ø)

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