Bump async from 2.6.3 to 2.6.4

Bumps [async](https://github.com/caolan/async) from 2.6.3 to 2.6.4.
- [Release notes](https://github.com/caolan/async/releases)
- [Changelog](https://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md)
- [Commits](https://github.com/caolan/async/compare/v2.6.3...v2.6.4)

---
updated-dependencies:
- dependency-name: async
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

package-lock.json

@@ -495,9 +495,9 @@
       }
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-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
-      "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "dev": true,
       "dependencies": {
         "lodash": "^4.17.14"
@@ -596,7 +596,7 @@
     },
     "node_modules/babel-code-frame/node_modules/chalk": {
       "version": "1.1.3",
-      "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
       "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
       "dev": true,
       "dependencies": {
@@ -1156,7 +1156,7 @@
     },
     "node_modules/colors": {
       "version": "1.0.3",
-      "resolved": "http://registry.npmjs.org/colors/-/colors-1.0.3.tgz",
+      "resolved": "https://registry.npmjs.org/colors/-/colors-1.0.3.tgz",
       "integrity": "sha1-BDP0TYCWgP3rYO0mDxsMJi6CpAs=",
       "dev": true,
       "engines": {
@@ -1165,7 +1165,7 @@
     },
     "node_modules/commander": {
       "version": "2.6.0",
-      "resolved": "http://registry.npmjs.org/commander/-/commander-2.6.0.tgz",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.6.0.tgz",
       "integrity": "sha1-nfflL7Kgyw+4kFjugMMQQiXzfh0=",
       "dev": true,
       "engines": {
@@ -3462,7 +3462,7 @@
     },
     "node_modules/globby/node_modules/pify": {
       "version": "2.3.0",
-      "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+      "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
       "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
       "dev": true,
       "engines": {
@@ -9964,9 +9964,9 @@
       "dev": true
     },
     "async": {
-      "version": "2.6.3",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
-      "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "dev": true,
       "requires": {
         "lodash": "^4.17.14"
@@ -10047,7 +10047,7 @@
         },
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -10502,13 +10502,13 @@
     },
     "colors": {
       "version": "1.0.3",
-      "resolved": "http://registry.npmjs.org/colors/-/colors-1.0.3.tgz",
+      "resolved": "https://registry.npmjs.org/colors/-/colors-1.0.3.tgz",
       "integrity": "sha1-BDP0TYCWgP3rYO0mDxsMJi6CpAs=",
       "dev": true
     },
     "commander": {
       "version": "2.6.0",
-      "resolved": "http://registry.npmjs.org/commander/-/commander-2.6.0.tgz",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.6.0.tgz",
       "integrity": "sha1-nfflL7Kgyw+4kFjugMMQQiXzfh0=",
       "dev": true
     },
@@ -12420,7 +12420,7 @@
         },
         "pify": {
           "version": "2.3.0",
-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
           "dev": true
         }