Match .nvmrc to node version in package.json and travis.yml

[whyisjake]

On several older versions of WordPress, the .nvmrc file is listing an incorrect version number. These should be updated to use the version that Travis is using when putting together builds.

[SergeyBiryukov]

Previously: #48140

[desrosj]

Also previously: #51603.

Related: #51749.

[whyisjake]

In 49653:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This is the commit for the 4.9 branch.

Fixes #51682.

Props SergeyBiryukov, desrosj, whyisjake.

[whyisjake]

In 49654:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 4.8 branch.

Fixes #51682.

Props SergeyBiryukov, desrosj, whyisjake.

[whyisjake]

In 49655:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 4.7 branch.

Fixes #51682.

Props SergeyBiryukov, desrosj, whyisjake.

[whyisjake]

In 49656:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 4.6 branch.

Fixes #51682.

Props SergeyBiryukov, desrosj, whyisjake.

[whyisjake]

In 49657:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 4.5 branch.

Fixes #51682.

Props SergeyBiryukov, desrosj, whyisjake.

[whyisjake]

In 49658:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 4.5 branch.

Fixes #51682.

[whyisjake]

In 49659:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 4.4 branch.

Fixes #51682.

[whyisjake]

In 49660:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 4.3 branch.

Fixes #51682.

[whyisjake]

In 49661:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 4.1 branch.

Fixes #51682.

[whyisjake]

In 49662:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 4.0 branch.

Fixes #51682.

[whyisjake]

In 49663:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 3.9 branch.

Fixes #51682.

[whyisjake]

In 49664:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 3.8 branch.

Fixes #51682.

[whyisjake]

In 49665:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 3.7 branch.

Fixes #51682.

[whyisjake]

In 49666:

Build/Test Tools: Match .nvmrc with the declared node engine.

Let's match up the versions from package.json, .travis.yml and .nvmrc.

This brings the changes from [49653] to the 4.2 branch.

Fixes #51682.