chore(deps): update dependency com.google.cloud:google-cloud-dialogfl…

…ow-cx to v0.5.0 (#115)

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This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.cloud:google-cloud-dialogflow-cx](https://togithub.com/googleapis/java-dialogflow-cx) | minor | `0.4.1` -> `0.5.0` |

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### Release Notes

<details>
<summary>googleapis/java-dialogflow-cx</summary>

### [`v0.5.0`](https://togithub.com/googleapis/java-dialogflow-cx/blob/master/CHANGELOG.md#&#8203;050-httpswwwgithubcomgoogleapisjava-dialogflow-cxcomparev041v050-2020-12-15)

[Compare Source](https://togithub.com/googleapis/java-dialogflow-cx/compare/v0.4.1...v0.5.0)

##### Features

-   allowed custom to specify webhook headers through query parameters ([#&#8203;109](https://www.github.com/googleapis/java-dialogflow-cx/issues/109)) ([329b306](https://www.github.com/googleapis/java-dialogflow-cx/commit/329b306505d291dc9f7b3e9832adf20d0abc30a8))

##### Bug Fixes

-   change location in IT to be 'global' ([#&#8203;103](https://www.github.com/googleapis/java-dialogflow-cx/issues/103)) ([4053872](https://www.github.com/googleapis/java-dialogflow-cx/commit/405387236262b9d04b074304f78f1cc1da4b662b))

##### Dependencies

-   update dependency com.google.cloud:google-cloud-shared-dependencies to v0.16.1 ([e0830ab](https://www.github.com/googleapis/java-dialogflow-cx/commit/e0830ab54843fce058aa9bdcf0e228e7c5b827fb))
-   update dependency com.google.cloud:google-cloud-shared-dependencies to v0.17.0 ([#&#8203;114](https://www.github.com/googleapis/java-dialogflow-cx/issues/114)) ([772e3e6](https://www.github.com/googleapis/java-dialogflow-cx/commit/772e3e616d169e7ca496d80a49b46d272169ada8))

##### [0.4.1](https://www.github.com/googleapis/java-dialogflow-cx/compare/v0.4.0...v0.4.1) (2020-12-02)

##### Dependencies

-   update dependency com.google.cloud:google-cloud-shared-dependencies to v0.16.0 ([#&#8203;96](https://www.github.com/googleapis/java-dialogflow-cx/issues/96)) ([a3522ae](https://www.github.com/googleapis/java-dialogflow-cx/commit/a3522ae87ffdc09d26a6b97669b6bb2f86df5eb9))

</details>

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dialogflow-cx/snippets/pom.xml

@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-dialogflow-cx</artifactId>
-      <version>0.4.1</version>
+      <version>0.5.0</version>
     </dependency>
 
     <dependency>