Fix bcrypt install failing on node v10

Update bcrypt to version 3.0.6, as versions below 3 are not supported on
node v10, and versions prior to 3.0.6 are not supported on node v12.

CHANGELOG.md

@@ -12,6 +12,8 @@ Version 1.2.2
   to the current one in researchSync.
 - Fixed crash in researchSync when modded technologies are present only on some
   nodes.
+- Fixed install failing due to bcrypt version less than 3 not being supported
+  on node v10.
 
 
 Version 1.2.1

package.json

@@ -20,7 +20,7 @@
     "as-table": "^1.0.31",
     "averaged-timeseries": "^1.4.0",
     "base64url": "^3.0.0",
-    "bcrypt": "^2.0.1",
+    "bcrypt": "^3.0.6",
     "bcrypt-promise": "^2.0.0",
     "body-parser": "^1.18.2",
     "cli": "^1.0.1",