Exclude build jobs on PHP 7.2 and 7.3 with lowest composer deps

Author: sascha-egerer

.travis.yml

@@ -6,6 +6,12 @@ php:
 env:
   - dependencies=lowest
   - dependencies=highest
+matrix:
+  exclude:
+    - php: 7.2
+      env: dependencies=lowest
+    - php: 7.3
+      env: dependencies=lowest
 before_script:
   - composer self-update
   - if [ "$dependencies" = "lowest" ]; then composer update --prefer-lowest --no-interaction; fi;