test(typescript): pin rxjs to 5.x in typescript tests

Author: christopherthielen

test/ts/typescript2.3/package.json

@@ -11,7 +11,7 @@
     "@angular/common": "latest",
     "@angular/core": "latest",
     "@uirouter/angular": "latest",
-    "rxjs": "latest",
+    "rxjs": "^5.0.0",
     "typescript": "2.3"
   },
   "devDependencies": {}

test/ts/typescript2.4/package.json

@@ -11,7 +11,7 @@
     "@angular/common": "latest",
     "@angular/core": "latest",
     "@uirouter/angular": "latest",
-    "rxjs": "latest",
+    "rxjs": "^5.0.0",
     "typescript": "2.4"
   },
   "devDependencies": {}

test/ts/typescript2.5/package.json

@@ -11,7 +11,7 @@
     "@angular/common": "latest",
     "@angular/core": "latest",
     "@uirouter/angular": "latest",
-    "rxjs": "latest",
+    "rxjs": "^5.0.0",
     "typescript": "2.5"
   },
   "devDependencies": {}

test/ts/typescript2.6/package.json

@@ -11,7 +11,7 @@
     "@angular/common": "latest",
     "@angular/core": "latest",
     "@uirouter/angular": "latest",
-    "rxjs": "latest",
+    "rxjs": "^5.0.0",
     "typescript": "2.6"
   },
   "devDependencies": {}