Bump gson from 2.8.0 to 2.8.5 (#967)

Bumps [gson](https://github.com/google/gson) from 2.8.0 to 2.8.5.
- [Release notes](https://github.com/google/gson/releases)
- [Changelog](https://github.com/google/gson/blob/master/CHANGELOG.md)
- [Commits](google/gson@gson-parent-2.8.0...gson-parent-2.8.5)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

elide-contrib/elide-swagger/pom.xml

@@ -71,7 +71,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.0</version>
+            <version>2.8.5</version>
         </dependency>
         <dependency>
             <groupId>javax.persistence</groupId>

elide-contrib/elide-test-helpers/pom.xml

@@ -42,7 +42,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.0</version>
+            <version>2.8.5</version>
         </dependency>
         <dependency>
             <groupId>com.graphql-java</groupId>