Release firefox-esr version 78.3.0esr-1~deb10u1co1

Signed-off-by: Ritesh Raj Sarraf <ritesh.sarraf@collabora.com>

debian/changelog

+firefox-esr (78.3.0esr-1~deb10u1co1) apertis; urgency=medium
+
+  * Sync changes from Debian Buster.
+  * Apertis specific changes
+    + d/rules: Set DIST to apertis and add apertis to the list of
+      distributions where firefox bundled libraries should be used.
+    + d/rules: Set SHELL variable as docker doesn't carry this environment
+      variable
+
+ -- Ritesh Raj Sarraf <ritesh.sarraf@collabora.com>  Wed, 07 Oct 2020 20:14:38 +0530
+
 firefox-esr (78.3.0esr-1~deb10u1) buster-security; urgency=medium
 
   * New upstream release.