[dispatcharr-exporter]: Bump to v2.4.2

[sethwv]

About this submission

This PR is to update the listed version of dispatcharr-exporter to v2.4.2
https://github.com/sethwv/dispatcharr-exporter/releases/tag/v2.4.2

Fixed

• Prevent exporter auto-start from being blocked by stale state left behind after a failed upgrade or ungraceful shutdown by clearing prior Redis keys and removing the stale auto-start lock file on startup.

Pre-submission checklist

If this is a new plugin:

• Plugin folder is named lowercase-kebab-case
• plugin.json contains all required fields (name, version, description, author or maintainers, license)
• My GitHub username is in author or maintainers
• license is a valid OSI-approved SPDX identifier (e.g. MIT, Apache-2.0)
• I have tested the plugin against a running Dispatcharr instance

If this is an update to an existing plugin:

• version in plugin.json is incremented (unless this is a metadata-only change - see Versioning)
• I am listed in author or maintainers of the existing plugin

[dispatcharr-bot]

Plugin Validation Results

Modified plugins: 1

Plugin: dispatcharr-exporter

Check	Status	Details
Required fields	✅	All required fields present
Maintainers	✅	sethwv
License	✅	MIT - MIT License
Permission	✅	You have permission to modify this plugin
Version	✅	2.4.2
Version bump	✅	2.4.1 → 2.4.2

CodeQL found 1 medium severity issue(s) - these are not blocking but are worth a look.

Rule	Location	Description
py/bind-socket-all-network-interfaces	plugins/dispatcharr-exporter/plugin.py:2520	'0.0.0.0' binds a socket to all interfaces.

---

🎉 All validation checks passed!

This PR modifies 1 plugin(s) and all checks have passed.