fix(deps): update version.connectors to v8.9.4

Author: renovate[bot]

pom.xml

@@ -13,7 +13,7 @@
         <maven.compiler.release>21</maven.compiler.release>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <version.connectors>8.9.3</version.connectors>
+        <version.connectors>8.9.4</version.connectors>
         <version.camunda>8.9.5</version.camunda>
         <version.assertj>3.27.6</version.assertj>
         <version.mockito>5.23.0</version.mockito>