fix: (dpluger) add aggregation key type checking

[rkspx]

• add type checking for aggregation key conversion, this prevent panic when the resulted aggregation key isn't float64

[codecov]

Codecov Report

Merging #381 (5efffc6) into master (d96480f) will increase coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #381      +/-   ##
==========================================
+ Coverage   96.72%   96.78%   +0.06%     
==========================================
  Files          45       45              
  Lines        3175     3175              
==========================================
+ Hits         3071     3073       +2     
+ Misses         76       74       -2     
  Partials       28       28              

Impacted Files	Coverage Δ
internal/pkg/dsiem/worker/worker.go	97.61% <0.00%> (+2.38%)	⬆️

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[defenbot]

🎉 This PR is included in version 0.32.8 🎉

The release is available on GitHub release

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