chore(deps): update dependency com.google.cloud:google-cloud-dlp to v2.4.0 (#543)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-dlp](https://togithub.com/googleapis/java-dlp) | `2.3.4` -> `2.4.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-dlp/2.4.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-dlp/2.4.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-dlp/2.4.0/compatibility-slim/2.3.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-dlp/2.4.0/confidence-slim/2.3.4)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>googleapis/java-dlp</summary>

### [`v2.4.0`](https://togithub.com/googleapis/java-dlp/blob/master/CHANGELOG.md#&#8203;240-httpswwwgithubcomgoogleapisjava-dlpcomparev234v240-2021-05-31)

[Compare Source](https://togithub.com/googleapis/java-dlp/compare/v2.3.4...v2.4.0)

##### Features

-   add `gcf-owl-bot[bot]` to `ignoreAuthors` ([#&#8203;531](https://www.github.com/googleapis/java-dlp/issues/531)) ([5bc1ab9](https://www.github.com/googleapis/java-dlp/commit/5bc1ab99c9f145d6f1becb05869b8be682821afa))

##### Dependencies

-   update dependency com.google.cloud:google-cloud-shared-dependencies to v1.2.0 ([#&#8203;532](https://www.github.com/googleapis/java-dlp/issues/532)) ([2a82b38](https://www.github.com/googleapis/java-dlp/commit/2a82b38d4b46f6145f8d1dc298dc52b819360afd))

##### [2.3.4](https://www.github.com/googleapis/java-dlp/compare/v2.3.3...v2.3.4) (2021-05-14)

##### Dependencies

-   update dependency com.google.cloud:google-cloud-pubsub to v1.112.5 ([#&#8203;522](https://www.github.com/googleapis/java-dlp/issues/522)) ([bf33cd2](https://www.github.com/googleapis/java-dlp/commit/bf33cd208ec34501d915b69ad6976efc6437fc8d))

##### [2.3.3](https://www.github.com/googleapis/java-dlp/compare/v2.3.2...v2.3.3) (2021-05-11)

##### Dependencies

-   update dependency com.google.cloud:google-cloud-shared-dependencies to v1.1.0 ([#&#8203;514](https://www.github.com/googleapis/java-dlp/issues/514)) ([b5143f5](https://www.github.com/googleapis/java-dlp/commit/b5143f5e12b6ad4910f49188589e3f49842bc9a8))

##### [2.3.2](https://www.github.com/googleapis/java-dlp/compare/v2.3.1...v2.3.2) (2021-04-26)

##### Bug Fixes

-   release scripts from issuing overlapping phases ([#&#8203;494](https://www.github.com/googleapis/java-dlp/issues/494)) ([5675143](https://www.github.com/googleapis/java-dlp/commit/5675143b2710756e2802d26685c51796c0a86085))

##### Dependencies

-   update dependency com.google.cloud:google-cloud-pubsub to v1.112.1 ([#&#8203;490](https://www.github.com/googleapis/java-dlp/issues/490)) ([5924f7a](https://www.github.com/googleapis/java-dlp/commit/5924f7a10860aa46443b0da5988a45440e547cfb))
-   update dependency com.google.cloud:google-cloud-pubsub to v1.112.3 ([#&#8203;501](https://www.github.com/googleapis/java-dlp/issues/501)) ([1047216](https://www.github.com/googleapis/java-dlp/commit/10472167f1a7f573e967dffe7ca183c14ab92e9b))
-   update dependency com.google.cloud:google-cloud-shared-dependencies to v0.21.1 ([#&#8203;497](https://www.github.com/googleapis/java-dlp/issues/497)) ([a6bbefa](https://www.github.com/googleapis/java-dlp/commit/a6bbefa7b06898bc2fee697172300f4b034d0fff))
-   update dependency com.google.cloud:google-cloud-shared-dependencies to v1 ([#&#8203;500](https://www.github.com/googleapis/java-dlp/issues/500)) ([c317dfd](https://www.github.com/googleapis/java-dlp/commit/c317dfd4a55febc6e9877d948e2d996a4e47b776))

##### [2.3.1](https://www.github.com/googleapis/java-dlp/compare/v2.3.0...v2.3.1) (2021-04-12)

##### Documentation

-   version update ([#&#8203;472](https://www.github.com/googleapis/java-dlp/issues/472)) ([f3186cd](https://www.github.com/googleapis/java-dlp/commit/f3186cdb10f191985bca4dcc2c3176537c3b2aa0))

##### Dependencies

-   update dependency com.google.cloud:google-cloud-pubsub to v1.112.0 ([#&#8203;467](https://www.github.com/googleapis/java-dlp/issues/467)) ([39636a5](https://www.github.com/googleapis/java-dlp/commit/39636a574c585b145cc509b2f93fb1187a218941))
-   update dependency com.google.cloud:google-cloud-shared-dependencies to v0.21.0 ([#&#8203;483](https://www.github.com/googleapis/java-dlp/issues/483)) ([ed17f67](https://www.github.com/googleapis/java-dlp/commit/ed17f67e0b20dcdbefd99dcfc0241b0a3a84bcc0))

</details>

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dlp/snippets/install-without-bom/pom.xml

@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-dlp</artifactId>
-      <version>2.3.4</version>
+      <version>2.4.0</version>
     </dependency>
     <!-- [END dlp_install_without_bom] -->