Upgrade webrtc-adapter

package-lock.json

@@ -8390,6 +8390,14 @@
         "inherits": "^2.0.1"
       }
     },
+    "rtcpeerconnection-shim": {
+      "version": "1.2.13",
+      "resolved": "https://registry.npmjs.org/rtcpeerconnection-shim/-/rtcpeerconnection-shim-1.2.13.tgz",
+      "integrity": "sha512-Xz4zQLZNs9lFBvqbaHGIjLWtyZ1V82ec5r+WNEo7NlIx3zF5M3ytn9mkkfYeZmpE032cNg3Vvf0rP8kNXUNd9w==",
+      "requires": {
+        "sdp": "^2.6.0"
+      }
+    },
     "rx": {
       "version": "2.3.24",
       "resolved": "https://registry.npmjs.org/rx/-/rx-2.3.24.tgz",
@@ -10146,18 +10154,12 @@
       }
     },
     "webrtc-adapter": {
-      "version": "3.4.3",
-      "resolved": "https://registry.npmjs.org/webrtc-adapter/-/webrtc-adapter-3.4.3.tgz",
-      "integrity": "sha1-tjYGLu6abvFYrNDYUBtnhDS1bxY=",
+      "version": "6.3.0",
+      "resolved": "https://registry.npmjs.org/webrtc-adapter/-/webrtc-adapter-6.3.0.tgz",
+      "integrity": "sha512-WRLIEzXLCTSifhR1tqiK+HXuySLQ+8vESHBeJ0Uq5N9Eewa2hL+54fKnMqtB5sCSG7/crfntdovpp4R4ttvd8w==",
       "requires": {
-        "sdp": "^1.5.0"
-      },
-      "dependencies": {
-        "sdp": {
-          "version": "1.5.4",
-          "resolved": "https://registry.npmjs.org/sdp/-/sdp-1.5.4.tgz",
-          "integrity": "sha1-jgOPbdsUvXZa4fS1IW4SCUUR4NA="
-        }
+        "rtcpeerconnection-shim": "^1.2.10",
+        "sdp": "^2.7.0"
       }
     },
     "websocket-driver": {

package.json

@@ -66,7 +66,7 @@
     "tsify": "~4.0.0",
     "tweetnacl": "^1.0.0",
     "typescript": "^2.9.2",
-    "webrtc-adapter": "~3.4.3"
+    "webrtc-adapter": "^6.3.0"
   },
   "devDependencies": {
     "@types/jasmine": "^2.8.8",