sc_uri: use snprintf instead of sprintf

[tezc]

No description provided.

[codecov]

Codecov Report

Merging #106 (a57017f) into master (2aabcc4) will decrease coverage by 0.10%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #106      +/-   ##
==========================================
- Coverage   99.45%   99.35%   -0.10%     
==========================================
  Files          21       21              
  Lines        2183     2183              
  Branches      386      386              
==========================================
- Hits         2171     2169       -2     
- Misses          3        4       +1     
- Partials        9       10       +1     

Impacted Files	Coverage Δ
uri/sc_uri.c	97.95% <100.00%> (-2.05%)	⬇️

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