fix: remove iso-encoding for umlaut issue

[tobiasehlert]

This pull request updates the string escaping logic in TibiaDataQueryEscapeString and its associated tests to improve Unicode handling and simplify encoding. The main change is the removal of the conversion to Latin-1 encoding, allowing proper UTF-8 percent-encoding for non-ASCII characters.

String escaping and encoding improvements:

• Removed the conversion to Latin-1 encoding in TibiaDataQueryEscapeString, so strings are now percent-encoded directly in UTF-8, which is the standard for URLs.
• Updated the tests in TestEscaper to expect UTF-8 percent-encoded output for non-ASCII characters, and added a new test case for the string Näurin.

fix #470
close #471

[Copilot]

Pull Request Overview

This pull request fixes Unicode handling in string escaping by removing the conversion to Latin-1 (ISO-8859-1) encoding and allowing proper UTF-8 percent-encoding for non-ASCII characters. This resolves issues with umlaut characters and other Unicode characters being incorrectly encoded.

• Removed Latin-1 encoding conversion from TibiaDataQueryEscapeString function
• Updated test expectations to match UTF-8 percent-encoding output
• Added new test case for "Näurin" to verify proper umlaut handling

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/TibiaDataUtils.go	Removed Latin-1 encoding conversion, allowing direct UTF-8 percent-encoding
src/TibiaDataUtils_test.go	Updated test expectations and added new test case for Unicode handling

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.23%. Comparing base (b762ecc) to head (9fe3456).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #506      +/-   ##
==========================================
- Coverage   80.30%   80.23%   -0.08%     
==========================================
  Files          22       22              
  Lines        3697     3694       -3     
==========================================
- Hits         2969     2964       -5     
- Misses        587      589       +2     
  Partials      141      141              

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud