fix(deps): update dependency @google-cloud/common to ^0.21.0

Author: renovate[bot]

package.json

@@ -94,7 +94,7 @@
     "typescript": "~3.0.0"
   },
   "dependencies": {
-    "@google-cloud/common": "^0.20.3",
+    "@google-cloud/common": "^0.21.0",
     "builtin-modules": "^3.0.0",
     "continuation-local-storage": "^3.2.1",
     "extend": "^3.0.0",

yarn.lock

@@ -82,10 +82,11 @@
     lodash "^4.17.5"
     to-fast-properties "^2.0.0"
 
-"@google-cloud/common@^0.20.3":
-  version "0.20.3"
-  resolved "https://registry.yarnpkg.com/@google-cloud/common/-/common-0.20.3.tgz#639fb9ed07b0e20bdcfa84ebb0838b8cb2068e3b"
+"@google-cloud/common@^0.21.0":
+  version "0.21.1"
+  resolved "https://registry.yarnpkg.com/@google-cloud/common/-/common-0.21.1.tgz#7be61f835a9067b2c66dc8b04fd77d66877f99ff"
   dependencies:
+    "@google-cloud/promisify" "^0.3.0"
     "@types/duplexify" "^3.5.0"
     "@types/request" "^2.47.0"
     arrify "^1.0.1"
@@ -98,10 +99,13 @@
     pify "^3.0.0"
     request "^2.87.0"
     retry-request "^4.0.0"
-    split-array-stream "^2.0.0"
     stream-events "^1.0.4"
     through2 "^2.0.3"
 
+"@google-cloud/promisify@^0.3.0":
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/@google-cloud/promisify/-/promisify-0.3.0.tgz#b36a802ea07740b15b3bf63246df829d2dc24f14"
+
 "@types/builtin-modules@^2.0.0":
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/@types/builtin-modules/-/builtin-modules-2.0.0.tgz#ac89b765b8ef36f0d5ab42de10e39faa5fd64535"
@@ -2396,10 +2400,6 @@ is-retry-allowed@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-retry-allowed/-/is-retry-allowed-1.1.0.tgz#11a060568b67339444033d0125a61a20d564fb34"
 
-is-stream-ended@^0.1.4:
-  version "0.1.4"
-  resolved "https://registry.yarnpkg.com/is-stream-ended/-/is-stream-ended-0.1.4.tgz#f50224e95e06bce0e356d440a4827cd35b267eda"
-
 is-stream@^1.0.0, is-stream@^1.0.1, is-stream@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
@@ -4032,12 +4032,6 @@ spdx-satisfies@^4.0.0:
     spdx-expression-parse "^3.0.0"
     spdx-ranges "^2.0.0"
 
-split-array-stream@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/split-array-stream/-/split-array-stream-2.0.0.tgz#85a4f8bfe14421d7bca7f33a6d176d0c076a53b1"
-  dependencies:
-    is-stream-ended "^0.1.4"
-
 split-string@^3.0.1, split-string@^3.0.2:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/split-string/-/split-string-3.1.0.tgz#7cb09dda3a86585705c64b39a6466038682e8fe2"