Do deploy only for 'main' branch because of Gitlab Pages limitations
Do deploy only for 'main' branch because of Gitlab Pages limitations

Signed-off-by: Vladimir Shakhov <eddecf40f6b5d5947ff80bcc3483ea288b917ae0@collabora.com>

google/peripheral-customization-pwa,google/peripheral-customization-pwa,google/peripheral-customization-pwa,google/peripheral-customization-pwa