Added Fibonacci program by Aashi Sharma for Hacktoberfest 2025

[aashiisharma]

Added a simple Fibonacci program in Java.
Tested locally and ready to run.
Part of Hacktoberfest 2025 🎉

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.91%. Comparing base (873dd97) to head (5967dc7).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/main/java/fibonacci_series.java	0.00%	9 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6893      +/-   ##
============================================
- Coverage     77.96%   77.91%   -0.05%     
+ Complexity     6431     6430       -1     
============================================
  Files           736      737       +1     
  Lines         21476    21485       +9     
  Branches       4204     4205       +1     
============================================
- Hits          16744    16741       -3     
- Misses         4060     4070      +10     
- Partials        672      674       +2     

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[github-actions]

This pull request has been automatically closed because its workflows or checks failed and it has been inactive for more than 14 days. Please fix the workflows and reopen if you'd like to continue. Merging from main/master alone does not count as activity.