fix(deps): update dependency ember-concurrency to v1

package.json

@@ -45,7 +45,7 @@
     "ember-cli-showdown": "^4.4.4",
     "ember-cli-string-helpers": "^2.0.0",
     "ember-composable-helpers": "^2.2.0",
-    "ember-concurrency": "^0.10.0",
+    "ember-concurrency": "^1.0.0",
     "ember-fetch": "^6.5.0",
     "ember-intl": "^3.5.2",
     "ember-math-helpers": "^2.10.0",

yarn.lock

@@ -6540,16 +6540,6 @@ ember-composable-helpers@^2.1.0, ember-composable-helpers@^2.2.0:
     ember-cli-babel "^7.1.0"
     resolve "^1.10.0"
 
-ember-concurrency@^0.10.0:
-  version "0.10.1"
-  resolved "https://registry.yarnpkg.com/ember-concurrency/-/ember-concurrency-0.10.1.tgz#aae4528540391a7278e2c193a146b5474cad5ec2"
-  integrity sha512-KdvR5TEfnLov4igeIZiVueFOL0kMjkabMQrioipegey+NF23SSYThc/y2rKv109D92lTAJgC6Vp7+j2RtXqD+w==
-  dependencies:
-    babel-core "^6.24.1"
-    ember-cli-babel "^6.8.2"
-    ember-compatibility-helpers "^1.2.0"
-    ember-maybe-import-regenerator "^0.1.5"
-
 "ember-concurrency@^0.8.27 || ^0.9.0 || ^0.10.0":
   version "0.10.0"
   resolved "https://registry.yarnpkg.com/ember-concurrency/-/ember-concurrency-0.10.0.tgz#9c7c79dca411e01466119f02d7197c0a4ff0df08"
@@ -6570,6 +6560,16 @@ ember-concurrency@^0.9.0:
     ember-compatibility-helpers "^1.2.0"
     ember-maybe-import-regenerator "^0.1.5"
 
+ember-concurrency@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/ember-concurrency/-/ember-concurrency-1.0.0.tgz#3b650672fdd5dc1d45007626119135829076c2b6"
+  integrity sha512-76aKC0lo2LAPoQYz7vMRlpolWTIQerszr8PPf3JMM5cTOzPwXUtzDcjfso3JAEDdhyUF9fkv2V1DmHagFbC2YQ==
+  dependencies:
+    babel-core "^6.24.1"
+    ember-cli-babel "^6.8.2"
+    ember-compatibility-helpers "^1.2.0"
+    ember-maybe-import-regenerator "^0.1.5"
+
 ember-copy@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/ember-copy/-/ember-copy-1.0.0.tgz#426554ba6cf65920f31d24d0a3ca2cb1be16e4aa"