Update deps to resolve audit

Author: jasonnutter

.gitignore

@@ -5,4 +5,3 @@ test/End_to_end_test/debug.log
 npm-debug.log
 federationmetadata.xml
 *.sublime-workspace
-package-lock.json

package-lock.json

@@ -26,18 +26,18 @@
     "chai": "2.x.x",
     "chai-passport-strategy": "1.x.x",
     "grunt": "^1.0.1",
-    "grunt-contrib-nodeunit": "^1.0.0",
+    "grunt-contrib-nodeunit": "^2.1.0",
     "grunt-mocha-test": "^0.12.7",
-    "mocha": "^3.0.2",
-    "nodeunit": "^0.9.1"
+    "mocha": "^5.2.0",
+    "nodeunit": "^0.11.3"
   },
   "dependencies": {
     "async": "^1.5.2",
     "base64url": "^3.0.0",
     "bunyan": "^1.8.14",
     "cache-manager": "2.10.2",
     "https-proxy-agent": "^2.2.2",
-    "jwk-to-pem": "^1.2.6",
+    "jwk-to-pem": "^2.0.4",
     "jws": "^3.1.3",
     "lodash": "^4.11.2",
     "oauth": "0.9.15",