Update changelog for 0.88+dfsg-1 release

debian/changelog

+astrometry.net (0.88+dfsg-1) unstable; urgency=medium
+
+  * New upstream version 0.88+dfsg
+  * Rediff patches
+  * Push Standards-Version to 4.6.0. No changes required
+  * Update names of sample stars to be found on CI test
+  * Don't try to use 128-bit types on 32-bit platforms
+
+ -- Ole Streicher <olebole@debian.org>  Mon, 17 Jan 2022 14:08:13 +0100
+
 astrometry.net (0.85+dfsg-1) unstable; urgency=medium
 
   * New upstream version 0.85+dfsg