Mention package upgrades (security and others).

debian/changelog

@@ -2,7 +2,12 @@ tails (4.9) UNRELEASED; urgency=medium
 
   * Security fixes
     - Upgrade Tor Browser to 9.5.3-build1 (Closes: #17827).
+    - Upgrade Thunderbird to 1:68.10.0-1~deb10u1 (DSA-4718).
     - Upgrade Linux to 5.7.0-1 at 5.7.6-1 (Closes: #17786).
+    - Upgrade Evolution Data Server to 3.30.5-1+deb10u1 (DSA-4725).
+    - Upgrade FFmpeg to 7:4.1.6-1~deb10u1 (DSA-4722).
+    - Upgrade ImageMagick to 8:6.9.10.23+dfsg-2.1+deb10u1 (DSA-4712).
+    - Upgrade WebKitGTK to 2.28.3-2~deb10u1 (DSA-4724).
 
   * Bugfixes
     - Fix quoting issue triggering problems with some administration
@@ -12,12 +17,14 @@ tails (4.9) UNRELEASED; urgency=medium
     - Fix keyboard setting handling in the greeter (Closes: #17794).
     - Make sure log messages can be displayed by Plymouth, which has strict
       limits, and improve parsing in tails-gdm-error-message (Closes: #17533).
+    - Upgrade firmware-linux and firmware-nonfree to 20200421-1.
 
   * Minor improvements and updates
     - Ensure MAC spoofing messages are translated (Closes: #17783).
     - Improve failure handling for MAC spoofing (Closes: #17784).
     - Trigger MAC spoofing "panic" mode when the debug=test_mac_spoof_panic boot
       option is set.
+    - Upgrade VirtualBox guest modules to 6.1.12-dfsg-5.
 
   * Build system
     - Automate post-release GitLab updates, using gitlab-triage (Closes: #17589).