Upgrade CLI dependencies (#3743)

**Minor deps upgrades:**
- `@octokit/rest`: `16.33.1` ~> `16.43.1`
- `colors`: `1.3.2` ~> `1.4.0`
- `flowgen`: `1.9.0` ~> `1.10.0`
- `glob`: `7.1.3` ~> `7.1.3`
- `prettier`: `1.18.2` ~> `1.19.1`
- `table`: `5.0.2` ~> `5.4.6`

**Major deps upgrades:**
- `fs-extra`: `7.0.0` ~> `8.1.0`
- `got`: `8.3.2` ~> `10.5.7`
- `mkdirp`: `0.5.1` ~> `1.0.3`
- `rimraf`: `2.6.2` ~> `3.0.2`
- `semver`: `5.5.1` ~> `7.1.3`
- `unzipper`: `0.9.3` ~> `0.10.8`
- `which`: `1.3.1` ~> `2.0.2`
- `yargs`: `12.0.2` ~> `15.1.0`

**Removed deps:**
- `@babel/polyfill`: not needed any more thanks to dropping end-of-life Node versions

**Dev-deps upgrades:**
- `@babel/cli`: `7.1.0` ~> `7.8.4`
- `@babel/core`: `7.1.0` ~> `7.8.4`
- `@babel/preset-env`: `7.1.0` ~> `7.8.4`
- `@babel/preset-flow`: `7.1.0` ~> `7.8.4`
- `babel-core`: **removed**
- `babel-eslint`: `10.0.1` ~> `10.0.3`
- `babel-jest`: `23.6.0` ~> `25.1.0`
- `eslint `: `5.6.0` ~> `6.8.0`
- `eslint-plugin-flowtype`: `2.50.3` ~> `4.6.0`
- `eslint-plugin-prettier`: `2.7.0` ~> `3.1.2`
- `flow-bin`: `0.81.0` ~> `0.118.0` 🚀 
- `jest`: `23.6.0` ~> `25.1.0`

**CI:**
- remove `exit 0` to return error code on failed test

**Misc:**
- Fix `@octokit/rest` deprecation message

**Flow Defs:**
- `mkdirp_v1.0.x` will need to be added later in definitions (will do a separated PR)
- `yargs_v15.0.x` has been created by copy/paste `yargs_v12.0.x` this should be alright as API didn't change much but would require a proper PR.

**Breaking Change:**
- minimum NodeJS required version 10 (following https://nodejs.org/en/about/releases/)

.travis.yml

@@ -1,8 +1,8 @@
 sudo: false
 language: node_js
 node_js:
-  - '8'
   - '10'
+  - '12'
 env:
   - CXX=g++-4.8
 addons:

CHANGELOG.md

@@ -5,6 +5,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Changed
+- Travis specs now run on node 10 & 12, as opposed to 8 & 10 (#3743)
+- **[BREAKING-CHANGE]** Drop support for node < 10 (#3743)
+
+### Fixed
+- Updated octokit/rest to deprecation message (#3602)
+
 ## [2.6.2] - 2019-10-23
 
 ### Added

cli/.babelrc

@@ -1,6 +1,11 @@
 {
   "presets": [
-    "@babel/preset-env",
+    [
+      "@babel/preset-env",
+      {
+        "targets": { "node": "10" }
+      }
+    ],
     "@babel/preset-flow"
   ],
   "ignore": [

cli/flow-typed/npm/@babel/cli_vx.x.x.js

@@ -0,0 +1,90 @@
+// flow-typed signature: 69eca3231839f86cb466d38d1a8e0c11
+// flow-typed version: <<STUB>>/@babel/cli_v^7.8.4/flow_v0.118.0
+
+/**
+ * This is an autogenerated libdef stub for:
+ *
+ *   '@babel/cli'
+ *
+ * Fill this stub out by replacing all the `any` types.
+ *
+ * Once filled out, we encourage you to share your work with the
+ * community by sending a pull request to:
+ * https://github.com/flowtype/flow-typed
+ */
+
+declare module '@babel/cli' {
+  declare module.exports: any;
+}
+
+/**
+ * We include stubs for each file inside this npm package in case you need to
+ * require those files directly. Feel free to delete any files that aren't
+ * needed.
+ */
+declare module '@babel/cli/bin/babel-external-helpers' {
+  declare module.exports: any;
+}
+
+declare module '@babel/cli/bin/babel' {
+  declare module.exports: any;
+}
+
+declare module '@babel/cli/lib/babel-external-helpers' {
+  declare module.exports: any;
+}
+
+declare module '@babel/cli/lib/babel/dir' {
+  declare module.exports: any;
+}
+
+declare module '@babel/cli/lib/babel/file' {
+  declare module.exports: any;
+}
+
+declare module '@babel/cli/lib/babel' {
+  declare module.exports: any;
+}
+
+declare module '@babel/cli/lib/babel/options' {
+  declare module.exports: any;
+}
+
+declare module '@babel/cli/lib/babel/util' {
+  declare module.exports: any;
+}
+
+// Filename aliases
+declare module '@babel/cli/bin/babel-external-helpers.js' {
+  declare module.exports: $Exports<'@babel/cli/bin/babel-external-helpers'>;
+}
+declare module '@babel/cli/bin/babel.js' {
+  declare module.exports: $Exports<'@babel/cli/bin/babel'>;
+}
+declare module '@babel/cli/index' {
+  declare module.exports: $Exports<'@babel/cli'>;
+}
+declare module '@babel/cli/index.js' {
+  declare module.exports: $Exports<'@babel/cli'>;
+}
+declare module '@babel/cli/lib/babel-external-helpers.js' {
+  declare module.exports: $Exports<'@babel/cli/lib/babel-external-helpers'>;
+}
+declare module '@babel/cli/lib/babel/dir.js' {
+  declare module.exports: $Exports<'@babel/cli/lib/babel/dir'>;
+}
+declare module '@babel/cli/lib/babel/file.js' {
+  declare module.exports: $Exports<'@babel/cli/lib/babel/file'>;
+}
+declare module '@babel/cli/lib/babel/index' {
+  declare module.exports: $Exports<'@babel/cli/lib/babel'>;
+}
+declare module '@babel/cli/lib/babel/index.js' {
+  declare module.exports: $Exports<'@babel/cli/lib/babel'>;
+}
+declare module '@babel/cli/lib/babel/options.js' {
+  declare module.exports: $Exports<'@babel/cli/lib/babel/options'>;
+}
+declare module '@babel/cli/lib/babel/util.js' {
+  declare module.exports: $Exports<'@babel/cli/lib/babel/util'>;
+}