fix: Encoding plus symbol in URI's

[cbaker6]

New Pull Request Checklist

• I am not disclosing a vulnerability.
• I am creating this PR in reference to an issue.

Issue Description

Close #189

Approach

Encode all plus values in query parameters.

TODOs before merging

• Add tests
• Add entry to changelog
• Add changes to documentation (guides, repository pages, in-code descriptions)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.82%. Comparing base (0d51e70) to head (39f261a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #191   +/-   ##
=======================================
  Coverage   91.82%   91.82%           
=======================================
  Files         179      179           
  Lines       15919    15934   +15     
=======================================
+ Hits        14617    14632   +15     
  Misses       1302     1302           

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