chore: release 0.3.8 (#301)

🤖 I have created a release \*beep\* \*boop\* 
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### [0.3.8](https://www.github.com/googleapis/java-document-ai/compare/v0.3.7...v0.3.8) (2021-01-07)


### Dependencies

* update dependency com.google.cloud:google-cloud-shared-dependencies to v0.17.0 ([#300](https://www.github.com/googleapis/java-document-ai/issues/300)) ([7f96dc5](https://www.github.com/googleapis/java-document-ai/commit/7f96dc5a4b730ef7e8ed3e9010c4b6a1a15bbea0))
* update dependency com.google.cloud:google-cloud-storage to v1.113.8 ([#293](https://www.github.com/googleapis/java-document-ai/issues/293)) ([142c1cc](https://www.github.com/googleapis/java-document-ai/commit/142c1cce826257d4aa05d703ee0fdf72dd0130e2))
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This PR was generated with [Release Please](https://github.com/googleapis/release-please).

document-ai/snippets/pom.xml

@@ -41,7 +41,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-document-ai</artifactId>
-      <version>0.3.7</version>
+      <version>0.3.6</version>
     </dependency>
     <!-- [END documentai_install_with_bom] -->
     <dependency>