Update package_versions.txt

[Rygle]

Changed version of mediaelch to match latest available in ppa https://launchpad.net/~mediaelch/+archive/ubuntu/mediaelch-stable

---

• I have read the contributing guideline and understand that I have made the correct modifications

---

Description:

Update version of mediaelch in package_versions.txt to match latest stable version in https://launchpad.net/~mediaelch/+archive/ubuntu/mediaelch-stable

Benefits of this PR and context:

How Has This Been Tested?

Source / References:

[github-actions]

Thanks for opening this pull request! Be sure to follow the pull request template!

[LinuxServer-CI]

I am a bot, here are the test results for this PR:
https://ci-tests.linuxserver.io/lspipepr/mediaelch/2.10.6.4-1-pkg-b9a1d2c7-dev-56be5b2172d02606223f99d3f87349d78897d24f-pr-5/index.html
https://ci-tests.linuxserver.io/lspipepr/mediaelch/2.10.6.4-1-pkg-b9a1d2c7-dev-56be5b2172d02606223f99d3f87349d78897d24f-pr-5/shellcheck-result.xml

Tag	Passed
2.10.6.4-1-pkg-b9a1d2c7-dev-56be5b2172d02606223f99d3f87349d78897d24f-pr-5	✅

[Roxedus]

This is not how it works. this file is not used for input, its only a file that lists the packages in the container. There is no upstream build for this version https://launchpad.net/~mediaelch/+archive/ubuntu/mediaelch-stable/+packages.
#4 is still valid,