chore(pg12): Update travisCI to PG 12

.travis.yml

@@ -13,23 +13,36 @@ notifications:
     template:
       - "Project %{repository_name} build #%{build_number}: %{result} in %{elapsed_time}: %{build_url}"
 
-sudo: false
-
 cache:
   directories:
     - node_modules
 
-env:
-  - CXX=g++-4.8
+services:
+  - postgresql
 
 addons:
+  postgresql: "12"
   apt:
     sources:
       - ubuntu-toolchain-r-test
     packages:
+      - postgresql-12
+      - postgresql-client-12
       - g++-4.8
-  postgresql: "9.5"
-
+env:
+  global:
+    - CXX=g++-4.8
+
+before_install:
+  - sudo service postgresql stop
+  - printf "local all all trust\nhost all all 127.0.0.1 trust" > pg_hba.conf
+  - sudo chown postgres pg_hba.conf
+  - sudo mv pg_hba.conf /etc/postgresql/12/main
+  - sed -e 's/^port.*/port = 5432/' /etc/postgresql/12/main/postgresql.conf > postgresql.conf
+  - sudo chown postgres postgresql.conf
+  - sudo mv postgresql.conf /etc/postgresql/12/main
+  - sudo service postgresql start 12
+
 before_script:
   - psql -c 'CREATE DATABASE bookbrainz_test;' -U postgres
   - psql -c 'CREATE EXTENSION "uuid-ossp"; CREATE SCHEMA musicbrainz; CREATE SCHEMA bookbrainz;' -d bookbrainz_test -U postgres