fix: Remove unnecessary try/catch section from the service

[o-kopysov]

Pull Request

Description

Remove incorrect code from GitHub service and update UTs.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Code cleanup/refactoring
• Documentation update
• This change requires a documentation update
• CI system update
• Test Coverage update

Testing

Test Configuration:

• Java: v17
• LPVS Release: v1.4.2

Checklist:

• My code follows the style guidelines of this project
• My code meets the required code coverage for lines (90% and above)
• My code meets the required code coverage for branches (80% and above)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 87.36842% with 12 lines in your changes are missing coverage. Please review.

Project coverage is 90.74%. Comparing base (d04c45a) to head (648423f).

Files	Patch %	Lines
.../main/java/com/lpvs/service/LPVSGitHubService.java	89.24%	6 Missing and 4 partials ⚠️
...c/main/java/com/lpvs/service/LPVSQueueService.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #447      +/-   ##
============================================
+ Coverage     90.65%   90.74%   +0.09%     
- Complexity      488      489       +1     
============================================
  Files            47       47              
  Lines          1744     1729      -15     
  Branches        208      208              
============================================
- Hits           1581     1569      -12     
+ Misses           99       97       -2     
+ Partials         64       63       -1     

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[t-naumenko]

LGTM