fix(workflow): clean disk space

[TonyRL]

Description

Hopefully address the issue of https://github.com/RSSNext/Folo/actions/runs/20552478820 System.IO.IOException: No space left on device when building APK.

$ du -sh /usr/share/dotnet
4.0G    /usr/share/dotnet

$ du -sh /usr/local/.ghcup
6.4G    /usr/local/.ghcup

$ du -sh /opt/hostedtoolcache/CodeQL
1.7G    /opt/hostedtoolcache/CodeQL

$ du -sh /usr/share/swift
3.2G    /usr/share/swift

$ du -sh /usr/local/julia*
1015M   /usr/local/julia1.12.2

Running those we've got

# before
$ df -h /
Filesystem      Size  Used Avail Use% Mounted on
/dev/root        72G   55G   18G  76% /
# after
$ df -h /
Filesystem      Size  Used Avail Use% Mounted on
/dev/root        72G   39G   34G  54% /

PR Type

• Feature
• Bugfix
• Hotfix
• Other (please describe):

Screenshots (if UI change)

Demo Video (if new feature)

Linked Issues

Additional context

actions/runner-images#2840

Changelog

• I have updated the changelog/next.md with my changes.

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[safedep]

SafeDep Report Summary

No dependency changes detected. Nothing to scan.

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[Copilot]

Pull request overview

This PR addresses disk space issues in the Android build workflow by adding a cleanup step that removes unused toolchains and development tools from GitHub-hosted runners. The change aims to prevent "No space left on device" errors encountered during APK builds by freeing up approximately 16GB of disk space.

• Adds a disk cleanup step that removes dotnet, ghcup, CodeQL, Swift, and Julia installations
• Includes before/after disk space diagnostics using df -h /
• Positions the cleanup step before code checkout to maximize available space during the build