fix(install): fix git submodules installation

[linrongbin16]

Fix #226 .

[codecov]

Codecov Report

Attention: Patch coverage is 45.45455% with 12 lines in your changes are missing coverage. Please review.

Project coverage is 50.53%. Comparing base (f3630c3) to head (7a029e6).
Report is 4 commits behind head on main.

Files	Patch %	Lines
lua/colorbox/controller.lua	0.00%	7 Missing ⚠️
lua/colorbox/loader.lua	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #227      +/-   ##
==========================================
+ Coverage   50.44%   50.53%   +0.09%     
==========================================
  Files          10       10              
  Lines         450      467      +17     
==========================================
+ Hits          227      236       +9     
- Misses        223      231       +8     

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