chore: release 2.4.5 (#579)

🤖 I have created a release \*beep\* \*boop\*
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### [2.4.5](https://www.github.com/googleapis/java-dlp/compare/v2.4.4...v2.4.5) (2021-07-06)


### Dependencies

* update dependency com.google.cloud:google-cloud-pubsub to v1.113.5 ([#578](https://www.github.com/googleapis/java-dlp/issues/578)) ([1a98232](https://www.github.com/googleapis/java-dlp/commit/1a982325885269d3d8ac24298dababb2e04d2f13))
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This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).

dlp/snippets/snapshot/pom.xml

@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-dlp</artifactId>
-      <version>2.4.5-SNAPSHOT</version>
+      <version>2.4.5</version>
     </dependency>
     <!-- {x-version-update-end} -->