Convert lodash.uniq to native and remove an unused dev dep (#2564)

lib/php-version.js

@@ -7,7 +7,6 @@
 
 const { promisify } = require('util')
 const request = require('request')
-const uniq = require('lodash.uniq')
 const { listCompare } = require('./version')
 const { omitv } = require('./text-formatters')
 const { regularUpdate } = require('./regular-update')
@@ -193,9 +192,9 @@ function versionReduction(versions, phpReleases) {
   }
 
   // versions intersect
-  versions = uniq(versions)
-    .sort()
+  versions = Array.from(new Set(versions))
     .filter(n => phpReleases.includes(n))
+    .sort()
 
   // nothing to reduction
   if (versions.length < 2) {
@@ -222,14 +221,16 @@ function getPhpReleases(githubApiProvider) {
     url: '/repos/php/php-src/git/refs/tags',
     intervalMillis: 24 * 3600 * 1000, // 1 day
     scraper: tags =>
-      uniq(
-        tags
-          // only releases
-          .filter(
-            tag => tag.ref.match(/^refs\/tags\/php-\d+\.\d+\.\d+$/) != null
-          )
-          // get minor version of release
-          .map(tag => tag.ref.match(/^refs\/tags\/php-(\d+\.\d+)\.\d+$/)[1])
+      Array.from(
+        new Set(
+          tags
+            // only releases
+            .filter(
+              tag => tag.ref.match(/^refs\/tags\/php-\d+\.\d+\.\d+$/) != null
+            )
+            // get minor version of release
+            .map(tag => tag.ref.match(/^refs\/tags\/php-(\d+\.\d+)\.\d+$/)[1])
+        )
       ),
     request: (url, options, cb) =>
       githubApiProvider.request(request, url, {}, cb),