build(bench-trial): update to explicit versions

packages/bench-trial/package.json

@@ -15,8 +15,8 @@
     "email": "acatl.pacheco@viacom.com"
   },
   "dependencies": {
-    "benchmark": "2.x",
-    "commander": "2.x",
-    "chalk": "2.x"
+    "benchmark": "^2.1.4",
+    "commander": "^2.13.0",
+    "chalk": "^2.3.0"
   }
 }

yarn.lock

@@ -1120,7 +1120,7 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
-benchmark@2.1.4, benchmark@2.x:
+benchmark@2.1.4, benchmark@^2.1.4:
   version "2.1.4"
   resolved "https://registry.yarnpkg.com/benchmark/-/benchmark-2.1.4.tgz#09f3de31c916425d498cc2ee565a0ebf3c2a5629"
   dependencies:
@@ -1304,7 +1304,7 @@ chalk@1.1.3, chalk@^1.0.0, chalk@^1.1.0, chalk@^1.1.1, chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@2.x, chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.0:
+chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.3.0.tgz#b5ea48efc9c1793dccc9b4767c93914d3f2d52ba"
   dependencies:
@@ -1437,14 +1437,14 @@ command-join@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/command-join/-/command-join-2.0.0.tgz#52e8b984f4872d952ff1bdc8b98397d27c7144cf"
 
-commander@2.x, commander@^2.5.0:
-  version "2.13.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.13.0.tgz#6964bca67685df7c1f1430c584f07d7597885b9c"
-
 commander@^2.11.0, commander@^2.9.0:
   version "2.12.2"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.12.2.tgz#0f5946c427ed9ec0d91a46bb9def53e54650e555"
 
+commander@^2.13.0, commander@^2.5.0:
+  version "2.13.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.13.0.tgz#6964bca67685df7c1f1430c584f07d7597885b9c"
+
 commitizen@2.9.6, commitizen@latest:
   version "2.9.6"
   resolved "https://registry.yarnpkg.com/commitizen/-/commitizen-2.9.6.tgz#c0d00535ef264da7f63737edfda4228983fa2291"