fix: double invoke at same time

[echosoar]

No description provided.

[codecov-io]

Codecov Report

Merging #87 into master will increase coverage by 0.06%.
The diff coverage is 93.33%.

@@            Coverage Diff             @@
##           master      #87      +/-   ##
==========================================
+ Coverage   80.95%   81.02%   +0.06%     
==========================================
  Files          69       69              
  Lines        2473     2487      +14     
  Branches      233      234       +1     
==========================================
+ Hits         2002     2015      +13     
- Misses        469      470       +1     
  Partials        2        2              

Impacted Files	Coverage Δ
packages/serverless-invoke/src/utils.ts	90.24% <91.66%> (+0.24%)	⬆️
packages/serverless-invoke/src/core.ts	77.45% <100.00%> (+0.45%)	⬆️

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