renovatebot(deps): update docker.elastic.co/apm/apm-server docker tag…

… to v8.17.3

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.elastic.co/apm/apm-server | patch | `8.17.2` -> `8.17.3` |

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> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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ci/tests/elastic/run-elastic-apm.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # while sleep 9m; do echo -e '\n=====[ Gradle build is still running ]====='; done &
-export DOCKER_IMAGE="docker.elastic.co/apm/apm-server:8.17.2"
+export DOCKER_IMAGE="docker.elastic.co/apm/apm-server:8.17.3"
 echo "Running Elastic APM Server docker container"
 docker stop elastic-apm || true && docker rm elastic-apm || true
 docker run -d \