release_0.18.20-pkg-09854492-ls26

LinuxServer Changes:

Switching to new Base images, shift to arm32v7 tag.
sickgear Changes:

• Add NinjaCentral usenet provider
• Remove Nzb.org usenet provider (r.i.p)
• Remove Milkie torrent provider (last activity > 3 months)
• Fix setting ignore/require words in webapi
• Change handle TVDb api returns None for some shows as 'seriesName'