MDEV-28666: Add correct 'Breaks' to make sure upgrade from 10.2 succeeds

File '/usr/bin/mariadb_config' has been moved from Debian package
libmariadbd-dev to libmariadb-dev since MariaDB version 10.2
this leads to situation where upgrade will no succeed but fail
with this kind of error message

 * trying to overwrite '/usr/bin/mariadb_config', which is also in package libmariadbd-dev 1:10.2.44+maria~bionic

Add libmariadbd-dev to libmariadb-dev Debian control files
'Breaks' solve situation and upgrading won't error anymore

debian/control

@@ -179,7 +179,8 @@ Depends: libmariadb-dev (= ${binary:Version}),
          libmariadbd19 (= ${binary:Version}),
          ${misc:Depends},
          ${shlibs:Depends}
-Breaks: libmysqld-dev
+Breaks: libmysqld-dev,
+        libmariadbd-dev (<= 10.2)
 Replaces: libmysqld-dev
 Description: MariaDB embedded database, development files
  MariaDB is a fast, stable and true multi-user, multi-threaded SQL database