chore(functions/slack): add back missing package (GoogleCloudPlatform#3690)

Ace Nassri · web-flow · commit 989c08f73d05 · 2020-09-10T01:28:02.000Z
Hotfix for erroneous `pom.xml` change in GoogleCloudPlatform#3689 @lesv please merge **when tests pass** - thanks!
diff --git a/functions/slack/pom.xml b/functions/slack/pom.xml
@@ -56,6 +56,12 @@
       <version>1.0.2</version>
       <scope>provided</scope>
     </dependency>
+    
+    <dependency>
+      <groupId>com.google.code.gson</groupId>
+      <artifactId>gson</artifactId>
+      <version>2.8.6</version>
+    </dependency>
 
     <dependency>
       <groupId>com.google.apis</groupId>
