Remove source.address if it is an empty string (elastic#14898)

* Remove source.address if it is an empty string

* Updating changelog with latest and link

Author: KyleOnK8s

packages/slack/changelog.yml

@@ -1,4 +1,9 @@
 # newer versions go on top
+- version: "1.25.1"
+  changes:
+    - description: Fix handling of empty Slack `context.ip_address` fields.
+      type: bugfix
+      link: https://github.com/elastic/integrations/pull/14898
 - version: "1.25.0"
   changes:
     - description: Update Kibana constraint to support 9.0.0.

packages/slack/data_stream/audit/elasticsearch/ingest_pipeline/default.yml

@@ -120,6 +120,10 @@ processors:
   - user_agent:
       field: user_agent.original
       ignore_failure: true
+  - remove:
+      field: slack.context.ip_address
+      ignore_missing: true
+      if: ctx.slack?.context?.ip_address == ""
   - rename:
       field: slack.context.ip_address
       target_field: source.address

packages/slack/manifest.yml

@@ -1,7 +1,7 @@
 format_version: "3.0.2"
 name: slack
 title: "Slack Logs"
-version: "1.25.0"
+version: "1.25.1"
 description: "Slack Logs Integration"
 type: integration
 categories: