Add replacement annotation alongside deprecated one

Author: yhrytsai-atl

slack-server-integration-common/pom.xml

@@ -88,6 +88,11 @@
             <artifactId>atlassian-template-renderer-api</artifactId>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>com.atlassian.velocity.htmlsafe</groupId>
+            <artifactId>velocity-htmlsafe</artifactId>
+            <scope>provided</scope>
+        </dependency>
         <dependency>
             <groupId>commons-codec</groupId>
             <artifactId>commons-codec</artifactId>

slack-server-integration-common/src/main/java/com/atlassian/plugins/slack/velocity/VelocityPageBuilderService.java

@@ -1,6 +1,6 @@
 package com.atlassian.plugins.slack.velocity;
 
-import com.atlassian.templaterenderer.annotations.HtmlSafe;
+import com.atlassian.velocity.htmlsafe.HtmlSafe;
 import com.atlassian.webresource.api.assembler.PageBuilderService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;