Document changes and release 1:78.14.0-1

debian/changelog

+thunderbird (1:78.14.0-1) unstable; urgency=medium
+
+  * [6dc6817] d/changelog: Correct TB version for referenced MFSA
+  * [38f01f4] d/rules: Don't run dh_autoreconf
+    (Closes: #993494)
+  * [09c4cde] New upstream version 78.14.0
+    Fixed CVE issues in upstream version 78.14.0 (MFSA 2021-42):
+    CVE-2021-38493: Memory safety bugs fixed in Thunderbird 78.14 and
+                    Thunderbird 91.1
+
+ -- Carsten Schoenert <c.schoenert@t-online.de>  Wed, 08 Sep 2021 19:57:22 +0200
+
 thunderbird (1:78.13.0-1) unstable; urgency=medium
 
   * [b4498b0] New upstream version 78.13.0