Update .travis.yml to ask Travis CI to build and test on PostgreSQL 13.

diff --git a/.travis.yml b/.travis.yml
index 96460dd..4edc5b8 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,7 @@ compiler: gcc
 env:
    matrix:
       - PGBRANCH=master
+      - PGBRANCH=REL_13_STABLE
       - PGBRANCH=REL_12_STABLE
       - PGBRANCH=REL_11_STABLE
       - PGBRANCH=REL_10_STABLE