use before_install instead of before_script

.travis.yml

@@ -12,7 +12,7 @@ jobs:
       dist: xenial
       sudo: required
 
-      before_script:
+      before_install:
       - wget https://github.com/neo4j-drivers/seabolt/releases/download/v1.7.4/seabolt-1.7.4-Linux-ubuntu-16.04.deb
       - sudo dpkg -i seabolt-1.7.4-Linux-ubuntu-16.04.deb
       - sudo apt-get install -y libssl-dev build-essential
@@ -35,7 +35,7 @@ jobs:
       os: osx
       osx_image: xcode10.2
 
-      before_script:
+      before_install:
       - curl -LO https://github.com/neo4j-drivers/seabolt/releases/download/v1.7.4/seabolt-1.7.4-Darwin.tar.gz
       - tar -zxf seabolt-1.7.4-Darwin.tar.gz
       - export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:`pwd`/seabolt-1.7.4-Darwin/usr/local/share/pkgconfig