Bump com.slack.api:slack-api-client from 1.31.0 to 1.34.0

Bumps [com.slack.api:slack-api-client](https://github.com/slackapi/java-slack-sdk) from 1.31.0 to 1.34.0.
- [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@v1.31.0...v1.34.0)

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

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

client/build.gradle

@@ -22,7 +22,7 @@ dependencies {
     implementation "org.apache.logging.log4j:log4j-slf4j2-impl:$log4jVersion"
 
     // https://github.com/slackapi/java-slack-sdk/releases
-    implementation 'com.slack.api:slack-api-client:1.31.0'
+    implementation 'com.slack.api:slack-api-client:1.34.0'
     // https://mvnrepository.com/artifact/org.java-websocket/Java-WebSocket
     implementation 'org.java-websocket:Java-WebSocket:1.5.3'