Bump Jenkins Remoting version to 3206.vb_15dcf73f6a_9

[jenkins-infra-updatecli]

Bump Jenkins Remoting version

Update the remoting version in the tools-versions.yml file

change detected: * key "$.jenkins_remoting_version" updated from "3203.v94ce994fdb_31" to "3206.vb_15dcf73f6a_9", in file "provisioning/tools-versions.yml"

3206.vb_15dcf73f6a_9

Release published on the 2024-01-09 16:29:26 +0000 UTC at the url https://github.com/jenkinsci/remoting/releases/tag/3206.vb_15dcf73f6a_9

<!-- Optional: add a release summary here -->
## 🐛 Bug fixes

* Avoid continual thread replacement in `JarCacheSupport` (#717) @basil

## 👻 Maintenance

* Harden `JarCacheSupport` (#716) @basil
* Use `CompletableFuture` in `JarCache` (#715) @basil

Jenkins pipeline link

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