Bump packages and tidy poplib linting

Author: Dave Conway-Jones

package.json

@@ -41,14 +41,14 @@
         "grunt-simple-mocha": "^0.4.1",
         "imap": "^0.8.19",
         "mailparser": "^3.4.0",
-        "markdown-it": "^12.2.0",
+        "markdown-it": "^12.3.0",
         "mocha": "~6.2.3",
         "msgpack-lite": "^0.1.26",
         "multilang-sentiment": "^1.2.0",
         "ngeohash": "^0.6.3",
-        "node-red": "^2.1.3",
+        "node-red": "^2.1.4",
         "node-red-node-test-helper": "^0.2.7",
-        "nodemailer": "^6.7.1",
+        "nodemailer": "^6.7.2",
         "poplib": "^0.1.7",
         "proxyquire": "^2.1.3",
         "pushbullet": "^2.4.0",