chore(deps): update dependency nyc to v14

chore(deps): update dependency nyc to v14

This PR contains the following updates:

| Package | Type | Update | Change | References |
|---|---|---|---|---|
| nyc | devDependencies | major | [`^13.0.0` -> `^14.0.0`](https://diff.intrinsic.com/nyc/13.3.0/14.0.0) | [source](https://togithub.com/istanbuljs/nyc) |

---

### Release Notes

<details>
<summary>istanbuljs/nyc</summary>

### [`v14.0.0`](https://togithub.com/istanbuljs/nyc/blob/master/CHANGELOG.md#&#8203;1400httpsgithubcomistanbuljsnyccomparev1330v1400-2019-04-15)

[Compare Source](https://togithub.com/istanbuljs/nyc/compare/v13.3.0...v14.0.0)

##### Bug Fixes

-   Add `cwd` option to instrument command ([#&#8203;1024](https://togithub.com/istanbuljs/nyc/issues/1024)) ([051d95a](https://togithub.com/istanbuljs/nyc/commit/051d95a))
-   Add config values to hash salt ([#&#8203;988](https://togithub.com/istanbuljs/nyc/issues/988)) ([7ac325d](https://togithub.com/istanbuljs/nyc/commit/7ac325d)), closes [#&#8203;522](https://togithub.com/istanbuljs/nyc/issues/522)
-   Exclude negated not working with '--all' switch ([#&#8203;977](https://togithub.com/istanbuljs/nyc/issues/977)) ([91de23c](https://togithub.com/istanbuljs/nyc/commit/91de23c))
-   Make --all work for transpiled code ([#&#8203;1047](https://togithub.com/istanbuljs/nyc/issues/1047)) ([18e04ba](https://togithub.com/istanbuljs/nyc/commit/18e04ba))
-   Resolve absolute paths in nyc instrument ([#&#8203;1012](https://togithub.com/istanbuljs/nyc/issues/1012)) ([3cb1861](https://togithub.com/istanbuljs/nyc/commit/3cb1861)), closes [#&#8203;1014](https://togithub.com/istanbuljs/nyc/issues/1014)
-   Set processinfo pid/ppid to actual numbers ([#&#8203;1057](https://togithub.com/istanbuljs/nyc/issues/1057)) ([32f75b0](https://togithub.com/istanbuljs/nyc/commit/32f75b0))
-   Use a single instance of nyc for all actions of main command. ([#&#8203;1059](https://togithub.com/istanbuljs/nyc/issues/1059)) ([b909575](https://togithub.com/istanbuljs/nyc/commit/b909575))

##### Features

-   Add `delete` option to instrument command ([#&#8203;1005](https://togithub.com/istanbuljs/nyc/issues/1005)) ([d6db551](https://togithub.com/istanbuljs/nyc/commit/d6db551))
-   Add `include` and `exclude` options to instrument command ([#&#8203;1007](https://togithub.com/istanbuljs/nyc/issues/1007)) ([8da097e](https://togithub.com/istanbuljs/nyc/commit/8da097e))
-   Add processinfo index, add externalId ([#&#8203;1055](https://togithub.com/istanbuljs/nyc/issues/1055)) ([8dcf180](https://togithub.com/istanbuljs/nyc/commit/8dcf180))
-   Add support for nyc.config.js ([#&#8203;1019](https://togithub.com/istanbuljs/nyc/issues/1019)) ([3b203c7](https://togithub.com/istanbuljs/nyc/commit/3b203c7))
-   Add support to exclude files on coverage report generation ([#&#8203;982](https://togithub.com/istanbuljs/nyc/issues/982)) ([509c6aa](https://togithub.com/istanbuljs/nyc/commit/509c6aa))
-   Add test-exclude args to check-coverage and report subcommands. ([0fc217e](https://togithub.com/istanbuljs/nyc/commit/0fc217e))
-   Always build the processinfo temp dir ([#&#8203;1061](https://togithub.com/istanbuljs/nyc/issues/1061)) ([c213469](https://togithub.com/istanbuljs/nyc/commit/c213469))
-   Enable `es-modules` option for nyc instrument command ([#&#8203;1006](https://togithub.com/istanbuljs/nyc/issues/1006)) ([596b120](https://togithub.com/istanbuljs/nyc/commit/596b120))
-   Fix excludeAfterRemap functionality. ([36bcc0b](https://togithub.com/istanbuljs/nyc/commit/36bcc0b))
-   Implement `nyc instrument --complete-copy` ([#&#8203;1056](https://togithub.com/istanbuljs/nyc/issues/1056)) ([2eb13c6](https://togithub.com/istanbuljs/nyc/commit/2eb13c6))
-   Remove bundling ([#&#8203;1017](https://togithub.com/istanbuljs/nyc/issues/1017)) ([b25492a](https://togithub.com/istanbuljs/nyc/commit/b25492a))
-   Support turning off node_modules default exclude via `exclude-node-modules` option ([#&#8203;912](https://togithub.com/istanbuljs/nyc/issues/912)) ([b7e16cd](https://togithub.com/istanbuljs/nyc/commit/b7e16cd))
-   Add support for `--exclude-node-modules` to subcommands. ([#&#8203;1053](https://togithub.com/istanbuljs/nyc/issues/1053)) ([e597c46](https://togithub.com/istanbuljs/nyc/commit/e597c46))

##### BREAKING CHANGES

-   The `--exclude-after-remap` option is now functional and enabled by default.  This causes the `include` and `exclude` lists to be processed after using source maps to determine the original filename of sources.
-   Add a file named 'index.json' to the .nyc_output/processinfo directory, which has a different format from the other files in this dir.
-   Change the data type of the pid/ppid fields in processinfo files
-   `nyc instrument` now honors `include` and `exclude` settings, potentially resulting in some files that were previously instrumented being ignored.
-   The `plugins` option has been renamed to `parser-plugins`.
-   The logic involving include/exclude processing has changed.  Results should be verified to ensure all desired sources have coverage data.
-   `nyc instrument` now enables the `--es-module` option by default.  This can cause failures to instrument scripts which violate `'use strict'` rules.

</details>

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#321 automerged by dpebot

Author: renovate[bot]

packages/google-cloud-dialogflow/package.json

@@ -58,7 +58,7 @@
     "intelli-espower-loader": "^1.0.1",
     "jsdoc": "^3.5.5",
     "mocha": "^6.0.0",
-    "nyc": "^13.0.0",
+    "nyc": "^14.0.0",
     "power-assert": "^1.4.4",
     "prettier": "^1.7.4",
     "through2": "^3.0.0",