build: Update Aframe to 1.6.0, add explicit versions to dependencies

Explicitly keep the versions of dependencies that are currently used (no-op).
I haven't seen any side effects from updating Aframe to 1.6.0.
Just had to add the raycaster objects attribute (used by laser-controls) to avoid the following warning:
`components:raycaster:warn [raycaster] For performance, please define raycaster.objects when using raycaster or cursor components to whitelist which entities to intersect with. e.g., raycaster="objects: [data-raycastable]".`

index.html

@@ -4,10 +4,10 @@
   <meta charset="utf-8">
   <title>osm4vr demo - Fly through the world in VR with OSM map data</title>
   <meta name="description" content="osm4vr: Fly through the world in Virtual Reality, with map and buildings from OpenStreetmap">
-  <script src="https://aframe.io/releases/1.5.0/aframe.min.js"></script>
-  <script src="https://unpkg.com/aframe-extras/dist/aframe-extras.controls.min.js"></script>
-  <script src="https://unpkg.com/osmtogeojson/osmtogeojson.js"></script>
-  <script src="https://cdn.jsdelivr.net/npm/three/examples/js/utils/BufferGeometryUtils.min.js"></script>
+  <script src="https://aframe.io/releases/1.6.0/aframe.min.js"></script>
+  <script src="https://unpkg.com/aframe-extras@7.5.1/dist/aframe-extras.controls.min.js"></script>
+  <script src="https://unpkg.com/osmtogeojson@3.0.0-beta.5/osmtogeojson.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/three@0.147.0/examples/js/utils/BufferGeometryUtils.min.js"></script>
   <script src="osm-geojson.js"></script>
   <script src="osm-tiles.js"></script>
   <!-- <script src="log2hud.js"></script> -->
@@ -79,8 +79,8 @@ <h1>osm4vr</h1>
       </a-entity>
 
       <!-- The actual left and right hand controllers -->
-      <a-entity id="leftHand" laser-controls="hand: left" wing log2hud="target: lhud"></a-entity>
-      <a-entity id="rightHand" laser-controls="hand: right" wing log2hud="target: rhud"></a-entity>
+      <a-entity id="leftHand" laser-controls="hand: left" wing log2hud="target: lhud" raycaster="objects: .collidable;"></a-entity>
+      <a-entity id="rightHand" laser-controls="hand: right" wing log2hud="target: rhud" raycaster="objects: .collidable;"></a-entity>
     </a-entity>
 
     <a-entity osm-tiles="lat: 52.52; lon: 13.41; trackId: head" rotation="-90 0 0" shadow="receive: true"></a-entity>