test(deps): update dependency com.google.truth:truth to v1.1 (#328)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.truth:truth](com/google/truth/truth) | minor | `1.0.1` -> `1.1` |

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dialogflow/snippets/pom.xml

@@ -53,7 +53,7 @@
     <dependency>
       <groupId>com.google.truth</groupId>
       <artifactId>truth</artifactId>
-      <version>1.0.1</version>
+      <version>1.1</version>
       <scope>test</scope>
     </dependency>
   </dependencies>