v0.30.3-ls110

LinuxServer Changes:

Rebase to alpine 3.12. Fix APP_URL setting. Bump php post max and upload max filesizes to 100MB by default.
bookstack Changes:

Links

• Update instructions

Full List of Changes

This release contains the following fixes and changes:

• Added VBScript syntax highlighting to the code block editor. Thanks to @nutsflag. (#2302, #2255)
• Fixed issue where drawings would not save in the Markdown editor. (#2313, #2321)
• Updated some Spanish and Chinese translations. (#2303)