Replace _.assign and _.extend with Object.assign

[hellovietduc]

Related issue: #7747

[codecov-commenter]

Codecov Report

Merging #7766 into master will not change coverage.
The diff coverage is 95.00%.

@@           Coverage Diff           @@
##           master    #7766   +/-   ##
=======================================
  Coverage   88.11%   88.11%           
=======================================
  Files         246      246           
  Lines        9279     9279           
=======================================
  Hits         8176     8176           
  Misses       1103     1103           

Impacted Files	Coverage Δ
lib/plugins/aws/provider/awsProvider.js	92.72% <ø> (ø)
...ompile/events/apiGateway/lib/method/integration.js	98.21% <85.71%> (ø)
lib/classes/PluginManager.js	96.67% <100.00%> (ø)
lib/classes/Variables.js	99.72% <100.00%> (ø)
lib/plugins/aws/deploy/lib/createStack.js	100.00% <100.00%> (ø)
lib/plugins/aws/deploy/lib/extendedValidate.js	97.56% <100.00%> (ø)
lib/plugins/aws/lib/updateStack.js	98.24% <100.00%> (ø)
...ckage/compile/events/apiGateway/lib/authorizers.js	100.00% <100.00%> (ø)
.../package/compile/events/apiGateway/lib/validate.js	96.98% <100.00%> (ø)
lib/plugins/aws/package/compile/events/s3/index.js	100.00% <100.00%> (ø)
... and 2 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a60d2c7...08e59ab. Read the comment docs.

[medikoo]

Thank you @vietduc01100001 Looks great!