fix: geocentric-ecef typing

[jmurphy6895]

Fix type promotion for integer input

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 99.82%. Comparing base (d242328) to head (2e6a003).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/reference_frames/geodetic_geocentric.jl	50.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##              main      #11      +/-   ##
===========================================
- Coverage   100.00%   99.82%   -0.18%     
===========================================
  Files           29       29              
  Lines         1171     1173       +2     
===========================================
  Hits          1171     1171              
- Misses           0        2       +2     

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