mark ready for release

Author: rcsanchez97

debian/changelog

@@ -1,8 +1,8 @@
-libmongocrypt (1.19.1-1) UNRELEASED; urgency=medium
+libmongocrypt (1.19.1-1) unstable; urgency=medium
 
   * New upstream release.
 
- -- Roberto C. Sanchez <roberto@connexer.com>  Thu, 18 Jun 2026 10:18:21 -0400
+ -- Roberto C. Sanchez <roberto@connexer.com>  Thu, 18 Jun 2026 10:22:02 -0400
 
 libmongocrypt (1.19.0-1) unstable; urgency=medium