(Debian packaging) update for new branch name

Author: rcsanchez97

debian/control

@@ -18,7 +18,7 @@ Standards-Version: 4.4.0
 Section: libs
 Homepage: https://github.com/mongodb/mongo-c-driver
 Vcs-Git: https://github.com/mongodb/mongo-c-driver.git
-Vcs-Browser: https://github.com/mongodb/mongo-c-driver/tree/master
+Vcs-Browser: https://github.com/mongodb/mongo-c-driver/tree/r1.15
 
 Package: libmongoc-dev
 Section: libdevel

debian/gbp.conf

@@ -23,6 +23,6 @@ prebuild = bash -c "
     rm -rf \$zlib_rm_files"
 
 upstream-tree = BRANCH
-upstream-branch = master
+upstream-branch = r1.15
 upstream-tag = %(version)s
-debian-branch = master
+debian-branch = r1.15