Update video.js dependency constraints

Use the carat operator to specify the video.js compatibility range, which means the HLS plugin is compatible with 4.x video.js releases.

package.json

@@ -24,10 +24,10 @@
     "grunt-open": "0.2.3",
     "grunt-shell": "0.6.1",
     "grunt": "~0.4.1",
-    "video.js": "~4.4"
+    "video.js": "^4.5"
   },
   "peerDependencies": {
-    "video.js": "~4.4"
+    "video.js": "^4.5"
   },
   "dependencies": {
     "videojs-contrib-media-sources": "git+https://github.com/videojs/videojs-contrib-media-sources.git"