Update .travis.yml

Updated dependency to postgis 2.4
2019-06-19 15:04:10 +02:00 · 2019-06-19 15:04:10 +02:00 · 433db542ea
commit 433db542ea
--- a/.travis.yml
+++ b/.travis.yml
@ -12,7 +12,7 @@ addons:
  postgresql: "9.6"
  apt:
    packages:
-      - postgresql-9.6-postgis-2.3
+      - postgresql-9.6-postgis-2.4

 before_script:
  - flake8 tests ogn_test