Put default Travis tests to PHP 7.3

Author: derickr

.travis.yml

@@ -16,7 +16,7 @@ env:
 
 matrix:
   include:
-    - php: 7.2
+    - php: 7.3
       env:
         - TESTS=tests/atlas.phpt
         - TEST_PHP_ARGS="-q -s output.txt -x --show-diff"
@@ -25,44 +25,45 @@ matrix:
     - php: 7.0
     - php: 7.1
     - php: 7.2
-    - php: 7.2
+    - php: 7.3
+    - php: 7.3
       env:
         - DEPLOYMENT=STANDALONE_SSL
-    - php: 7.2
+    - php: 7.3
       env:
         - DEPLOYMENT=SHARDED_CLUSTER
-    - php: 7.2
+    - php: 7.3
       env:
         - DEPLOYMENT=SHARDED_CLUSTER_RS
-    - php: 7.2
+    - php: 7.3
       env:
         - DEPLOYMENT=STANDALONE_AUTH
-    - php: 7.2
+    - php: 7.3
       env:
         - DEPLOYMENT=REPLICASET
-    - php: 7.2
+    - php: 7.3
       env:
         - DEPLOYMENT=REPLICASET_SINGLE
-    - php: 7.2
+    - php: 7.3
       env:
         - DEPLOYMENT=REPLICASET_AUTH
-    - php: 7.2
+    - php: 7.1
       env:
         - SERVER_VERSION=3.0.15
         - DEPLOYMENT=REPLICASET_OLD
-    - php: 7.0
+    - php: 7.1
       env:
         - SERVER_VERSION=3.0.15
         - DEPLOYMENT=STANDALONE_OLD
-    - php: 7.0
+    - php: 7.1
       env:
         - SERVER_VERSION=3.2.20
         - DEPLOYMENT=STANDALONE_OLD
-    - php: 7.0
+    - php: 7.1
       env:
         - SERVER_VERSION=3.4.15
         - DEPLOYMENT=STANDALONE_OLD
-    - php: 7.0
+    - php: 7.1
       env:
         - SERVER_VERSION=3.6.5