fix(deps): update dependency @google-cloud/storage to v5 (#56)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [@google-cloud/storage](https://togithub.com/googleapis/nodejs-storage) | dependencies | major | [`^4.2.0` -> `^5.0.0`](https://renovatebot.com/diffs/npm/@google-cloud%2fstorage/4.7.0/5.0.0) |

---

### Release Notes

<details>
<summary>googleapis/nodejs-storage</summary>

### [`v5.0.0`](https://togithub.com/googleapis/nodejs-storage/blob/master/CHANGELOG.md#&#8203;500-httpswwwgithubcomgoogleapisnodejs-storagecomparev470v500-2020-05-13)

[Compare Source](https://togithub.com/googleapis/nodejs-storage/compare/v4.7.0...v5.0.0)

##### ⚠ BREAKING CHANGES

-   automatically detect contentType if not provided ([#&#8203;1190](https://togithub.com/googleapis/nodejs-storage/issues/1190))
-   drop keepAcl parameter in file copy ([#&#8203;1166](https://togithub.com/googleapis/nodejs-storage/issues/1166))
-   drop support for node.js 8.x

##### Features

-   automatically detect contentType if not provided ([#&#8203;1190](https://www.github.com/googleapis/nodejs-storage/issues/1190)) ([b31ba4a](https://www.github.com/googleapis/nodejs-storage/commit/b31ba4a11399b57538ddf0d6ca2e10b2aa3fbc3a))
-   enable bytes read tracking ([#&#8203;1074](https://www.github.com/googleapis/nodejs-storage/issues/1074)) ([0776a04](https://www.github.com/googleapis/nodejs-storage/commit/0776a044f3b2149b485e114369e952688df75645))

##### Bug Fixes

-   **bucket:** Only disable resumable uploads for bucket.upload (fixes [#&#8203;1133](https://www.github.com/googleapis/nodejs-storage/issues/1133)) ([#&#8203;1135](https://www.github.com/googleapis/nodejs-storage/issues/1135)) ([2c20148](https://www.github.com/googleapis/nodejs-storage/commit/2c201486b7b2d3146846ac96c877a904c4a674b0)), closes [/github.com/googleapis/nodejs-storage/pull/1135#issuecomment-620070038](https://www.github.com/googleapis//github.com/googleapis/nodejs-storage/pull/1135/issues/issuecomment-620070038)
-   add whitespace to generateV4SignedPolicy ([#&#8203;1136](https://www.github.com/googleapis/nodejs-storage/issues/1136)) ([dcee78b](https://www.github.com/googleapis/nodejs-storage/commit/dcee78b98da23b02fe7d2f13a9270546bc07bba8))
-   apache license URL ([#&#8203;468](https://www.github.com/googleapis/nodejs-storage/issues/468)) ([#&#8203;1151](https://www.github.com/googleapis/nodejs-storage/issues/1151)) ([e8116d3](https://www.github.com/googleapis/nodejs-storage/commit/e8116d3c6fa7412858692e67745b514eef78850e))
-   Point to team in correct org ([#&#8203;1185](https://www.github.com/googleapis/nodejs-storage/issues/1185)) ([0bb1909](https://www.github.com/googleapis/nodejs-storage/commit/0bb19098013acf71cc3842f78ff333a8e356331a))
-   **deps:** update dependency [@&#8203;google-cloud/common](https://togithub.com/google-cloud/common) to v3 ([#&#8203;1134](https://www.github.com/googleapis/nodejs-storage/issues/1134)) ([774ac5c](https://www.github.com/googleapis/nodejs-storage/commit/774ac5c75f02238418cc8ed7242297ea573ca9cb))
-   **deps:** update dependency [@&#8203;google-cloud/paginator](https://togithub.com/google-cloud/paginator) to v3 ([#&#8203;1131](https://www.github.com/googleapis/nodejs-storage/issues/1131)) ([c1614d9](https://www.github.com/googleapis/nodejs-storage/commit/c1614d98e3047db379e09299b1014e80d73ed52f))
-   **deps:** update dependency [@&#8203;google-cloud/promisify](https://togithub.com/google-cloud/promisify) to v2 ([#&#8203;1127](https://www.github.com/googleapis/nodejs-storage/issues/1127)) ([06624a5](https://www.github.com/googleapis/nodejs-storage/commit/06624a534cd1fdbc38455eee8d89f9f60ba75758))
-   **deps:** update dependency uuid to v8 ([#&#8203;1170](https://www.github.com/googleapis/nodejs-storage/issues/1170)) ([6a98d64](https://www.github.com/googleapis/nodejs-storage/commit/6a98d64831baf1ca1ec2f03ecc4914745cba1c86))
-   **deps:** update gcs-resumable-upload, remove gitnpm usage ([#&#8203;1186](https://www.github.com/googleapis/nodejs-storage/issues/1186)) ([c78c9cd](https://www.github.com/googleapis/nodejs-storage/commit/c78c9cde49dccb2fcd4ce10e4e9f8299d65f6838))
-   **v4-policy:** encode special characters ([#&#8203;1169](https://www.github.com/googleapis/nodejs-storage/issues/1169)) ([6e48539](https://www.github.com/googleapis/nodejs-storage/commit/6e48539d76ca27e6f4c6cf2ac0872970f7391fed))
-   sync to [googleapis/conformance-tests@`fa559a1`](https://togithub.com/googleapis/conformance-tests/commit/fa559a1) ([#&#8203;1167](https://www.github.com/googleapis/nodejs-storage/issues/1167)) ([5500446](https://www.github.com/googleapis/nodejs-storage/commit/550044619d2f17a1977c83bce5df915c6dc9578c)), closes [#&#8203;1168](https://www.github.com/googleapis/nodejs-storage/issues/1168)

##### Miscellaneous Chores

-   drop keepAcl parameter in file copy ([#&#8203;1166](https://www.github.com/googleapis/nodejs-storage/issues/1166)) ([5a4044a](https://www.github.com/googleapis/nodejs-storage/commit/5a4044a8ba13f248fc4f791248f797eb0f1f3c16))

##### Build System

-   drop support for node.js 8.x ([b80c025](https://www.github.com/googleapis/nodejs-storage/commit/b80c025f106052fd25554c64314b3b3520e829b5))

</details>

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document-ai/package.json

@@ -14,7 +14,7 @@
   },
   "dependencies": {
     "@google-cloud/documentai": "^1.0.0",
-    "@google-cloud/storage": "^4.2.0"
+    "@google-cloud/storage": "^5.0.0"
   },
   "devDependencies": {
     "chai": "^4.2.0",