fix: skip space if needed, when decoding bool/null

[tdakkota]

No description provided.

[codecov]

Codecov Report

Merging #32 (73c28bb) into main (c929480) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main       #32   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           33        33           
  Lines         2250      2263   +13     
=========================================
+ Hits          2250      2263   +13     

Impacted Files	Coverage Δ
dec_bool.go	100.00% <100.00%> (ø)
dec_null.go	100.00% <100.00%> (ø)
dec_skip.go	100.00% <100.00%> (ø)

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