Update travis versions

Author: marc-mabe

.travis.yml

@@ -29,12 +29,13 @@ matrix:
     - php: 7.1
       env:
         - CODE_COVERAGE="1"
-    - php: nightly
-    - php: hhvm
-      # HHVM is no longer supported on Ubuntu Precise. Please consider using Trusty with `dist: trusty`.
+    - php: 7.2
+    - php: 7.3
+    # HHVM is no longer supported on Ubuntu Precise. Please consider using Trusty with `dist: trusty`.
+    - php: hhvm-3.27 # LTS
+      dist: trusty
+    - php: hhvm-3.30 # last with PHP support
       dist: trusty
-  allow_failures:
-    - php: nightly
 
 install:
   - if [ "${CODE_COVERAGE}" == "0" ]; then