minor #2064 add job using Symfony 4.4 components (xabbuh)

This PR was merged into the 2.x branch.

Discussion
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add job using Symfony 4.4 components

Commits
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4907aa7 add job using Symfony 4.4 components

Author: xabbuh

.travis.yml

@@ -8,7 +8,7 @@ cache:
 branches:
   only:
     - master
-    - /^\d+\.\d+$/
+    - /^\d+\.(\d+|x)$/
 
 matrix:
   fast_finish: true
@@ -19,9 +19,12 @@ matrix:
     # Symfony 3 LTS
     - php: 7.2
       env: SYMFONY_REQUIRE="3.4.*"
-    # Symfony 4
+    # Symfony 4.3
     - php: 7.3
       env: SYMFONY_REQUIRE="4.3.*"
+    # Symfony 4.4
+    - php: 7.4
+      env: SYMFONY_REQUIRE="4.4.*"
     # development dependencies
     - php: 7.4
       env: DEPENDENCIES='dev'