Log Message:
Update to 1.0048
Update DEPENDS

Upstream changes:
1.0048  2020-11-29 16:20:00 PST
    [IMPROVEMENTS]
        - Updated documentation for cotent_length and content_type #625
        - Allow hyphens in file extensions for custom MIME types #614
        - Updated some python test script to work with Python 3 #639
    [BUG FIXES]
         - Fix HTTP::Message::PSGI to work with delayed writer without content #653
         - Plackup reloader allows restarting the server when the path contains \ 
.git or .svn, just not at the beginning of the path #632
         - Added MIME types for .webp, .ttf and .xlsx files (rrwo)
         - Fix Plack::Request content to not error when Content-Type is empty #655