[7.x] Upgrade Node.js to version 12 (#61587)

[watson]

Backports the following commits to 7.x:

• Upgrade Node.js to version 12 (Upgrade Node.js to version 12 #61587)

[watson]

@elasticmachine merge upstream

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 170bbcb

Metrics [docs]

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
enterpriseSearch	698.4KB	698.4KB	-24.0B
monitoring	963.6KB	963.6KB	+6.0B
securitySolution	7.9MB	7.9MB	+16.0B
total			-2.0B

Distributable file count

id	before	after	diff
default	43164	43211	+47
oss	22759	22806	+47

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
kibanaUtils	150.2KB	150.4KB	+128.0B
spaces	292.0KB	292.1KB	+80.0B
upgradeAssistant	74.3KB	74.2KB	-24.0B
total			+184.0B

History

• 💔 Build #87743 failed 0803441

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@elasticmachine merge upstream