[Bridge/Propel1] Changed deps to accepts all upcoming propel1 versions

composer.json

@@ -65,7 +65,7 @@
         "doctrine/dbal": "~2.2",
         "doctrine/orm": "~2.2,>=2.2.3",
         "monolog/monolog": "~1.3",
-        "propel/propel1": "1.6.*",
+        "propel/propel1": "~1.6",
         "ircmaxell/password-compat": "1.0.*",
         "ocramius/proxy-manager": ">=0.3.1,<0.4-dev"
     },

src/Symfony/Bridge/Propel1/composer.json

@@ -20,7 +20,7 @@
         "symfony/http-foundation": "~2.0",
         "symfony/http-kernel": "~2.0",
         "symfony/form": "~2.2",
-        "propel/propel1": "1.6.*"
+        "propel/propel1": "~1.6"
     },
     "require-dev": {
         "symfony/stopwatch": "~2.2"