[gnome-software] (2 commits) ...Merge branch 'if-modified-since' into 'main'

From: Milan Crha <mcrha src gnome org>
To: commits-list gnome org
Cc:
Subject: [gnome-software] (2 commits) ...Merge branch 'if-modified-since' into 'main'
Date: Thu, 24 Mar 2022 08:39:08 +0000 (UTC)

Summary of changes:

  f09af1a... gs-download-utils: Support If-Modified-Since caching
  c122a9d... Merge branch 'if-modified-since' into 'main'