Bump com.slack.api:slack-api-client from 1.38.1 to 1.38.3 (#13576)

Bumps [com.slack.api:slack-api-client](https://github.com/slackapi/java-slack-sdk) from 1.38.1 to 1.38.3.
- [Release notes](https://github.com/slackapi/java-slack-sdk/releases)
- [Changelog](https://github.com/slackapi/java-slack-sdk/blob/main/jSlack_changelog.md)
- [Commits](slackapi/java-slack-sdk@v1.38.1...v1.38.3)

---
updated-dependencies:
- dependency-name: com.slack.api:slack-api-client
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

parent/pom.xml

@@ -422,7 +422,7 @@
         <saxon-version>12.4</saxon-version>
         <scala-datasonnet-version>2.13.13</scala-datasonnet-version>
         <shiro-version>2.0.0</shiro-version>
-        <slack-api-model-version>1.38.1</slack-api-model-version>
+        <slack-api-model-version>1.38.3</slack-api-model-version>
         <slf4j-api-version>2.0.12</slf4j-api-version>
         <slf4j-version>2.0.12</slf4j-version>
         <smack-version>4.3.5</smack-version>