use token and algo from jwt header (#6416)

* use token and algo from jwt header

* change node-rsa out for jwks-rsa, reflect change in tests and add one test for coverage

* remove superfluous cache, allow jwks cache parameters to be passed to validateAuthData

* remove package lock

* regenerate package lock

* try fixing package-lock with copy from master

* manual changes for merge conflict

* whitespace

* pass options as object

* fix inconsistent variable name

package.json

@@ -39,12 +39,12 @@
     "graphql-upload": "10.0.0",
     "intersect": "1.0.1",
     "jsonwebtoken": "8.5.1",
+    "jwks-rsa": "1.7.0",
     "ldapjs": "1.0.2",
     "lodash": "4.17.15",
     "lru-cache": "5.1.1",
     "mime": "2.4.4",
     "mongodb": "3.5.4",
-    "node-rsa": "1.0.7",
     "parse": "2.11.0",
     "pg-promise": "10.4.4",
     "pluralize": "^8.0.0",