Add `UnicodeEncodeError` exception handling to `core.py`

[milanbalazs]

Description

If the code contains special characters which are not part of the latin-1 codec, the print function will be failed with an UnicodeEncodeError exception. Like below:

UnicodeEncodeError: 'latin-1' codec can't encode characters in position 84-90: ordinal not in range(256)

If the string is encoded (default is utf-8) then the print function is able to print the related string. The users can identify the related file and line.

An example output with my change:

b"test.py:6: unused variable '\xd0\xb2\xd0\x82\xd0\x87' (60% confidence)"

Note:

• My change doesn't change the original behavior and it's totally backward compatible.

Related Issue

• https://github.com/jendrikseipp/vulture/issues/299

Checklist:

• [✅] I have updated the documentation in the README.md file or my changes don't require an update.
• [✅] I have added an entry in CHANGELOG.md.
• [✅] I have added or adapted tests to cover my changes.
• [✅] I have run tox -e fix-style to format my code and checked the result with tox -e style.

[codecov-commenter]

Codecov Report

Merging #300 (60f36e6) into main (02bb01d) will decrease coverage by 0.46%. The diff coverage is 72.72%.

@@            Coverage Diff             @@
##             main     #300      +/-   ##
==========================================
- Coverage   99.38%   98.93%   -0.46%     
==========================================
  Files          20       20              
  Lines         655      659       +4     
==========================================
+ Hits          651      652       +1     
- Misses          4        7       +3     

Impacted Files	Coverage Δ
vulture/core.py	98.52% <72.72%> (-0.88%)	:arrow_down:

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[jendrikseipp]

Elegant solution! Thanks!