chore(master): release 2.2.9 (#445)

🤖 I have created a release \*beep\* \*boop\* 
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### [2.2.9](https://github.com/googleapis/java-dlp/compare/v2.2.8...v2.2.9) (2021-02-26)


### Dependencies

* update dependency com.google.cloud:google-cloud-pubsub to v1.111.4 ([#443](https://github.com/googleapis/java-dlp/issues/443)) ([053fb97](https://github.com/googleapis/java-dlp/commit/053fb9727276d95ffc31ed7da257ab0a432c7cc7))
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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>2.2.9-SNAPSHOT</version>
+      <version>2.2.9</version>
     </dependency>
     <!-- {x-version-update-end} -->