feat: add last updated header for analytics

[aldy505]

No description provided.

[codecov]

Codecov Report

Merging #20 (dc73bcf) into master (e32a8be) will decrease coverage by 3.68%.
The diff coverage is 28.16%.

@@            Coverage Diff             @@
##           master      #20      +/-   ##
==========================================
- Coverage   57.47%   53.78%   -3.69%     
==========================================
  Files          11       11              
  Lines         435      502      +67     
==========================================
+ Hits          250      270      +20     
- Misses        148      189      +41     
- Partials       37       43       +6     

Impacted Files	Coverage Δ
analytics/server/server.go	0.00% <0.00%> (ø)
analytics/server/repo.go	47.72% <46.51%> (-0.40%)	⬇️

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