dependencies: Upgrade nearly all JavaScript dependencies.

Keep handlebars at 4.2.x because
https://github.com/wycats/handlebars.js/issues/1598 breaks our test
suite, and simplebar at 4.2.x because of
https://github.com/Grsmto/simplebar/issues/406.  Upgrade everything
else.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>

package.json

@@ -27,15 +27,15 @@
     "file-loader": "^4.0.0",
     "flatpickr": "^4.5.7",
     "font-awesome": "^4.7.0",
-    "handlebars": "^4.1.2",
+    "handlebars": "~4.2.2",
     "handlebars-loader": "^1.7.1",
     "html-webpack-plugin": "^4.0.0-beta.8",
-    "i18next": "^17.0.16",
+    "i18next": "^19.0.0",
     "jquery": "^3.4.1",
     "jquery-caret-plugin": "^1.5.2",
     "jquery-validation": "^1.19.0",
     "katex": "^0.11.1",
-    "mini-css-extract-plugin": "^0.6.0",
+    "mini-css-extract-plugin": "^0.8.0",
     "moment": "^2.24.0",
     "moment-timezone": "^0.5.25",
     "optimize-css-assets-webpack-plugin": "^5.0.3",
@@ -73,7 +73,7 @@
     "@types/mini-css-extract-plugin": "^0.8.0",
     "@types/node": "^12.0.7",
     "@types/optimize-css-assets-webpack-plugin": "^5.0.1",
-    "@types/terser-webpack-plugin": "^1.2.1",
+    "@types/terser-webpack-plugin": "^2.2.0",
     "@types/underscore": "^1.8.18",
     "@types/webpack": "^4.4.32",
     "@types/webpack-dev-server": "^3.1.6",
@@ -104,9 +104,5 @@
   "repository": {
     "type": "git",
     "url": "https://github.com/zulip/zulip.git"
-  },
-  "resolutions": {
-    "//": "Awaiting jquery-validation/jquery-validation#2248 to be published on NPM.",
-    "jquery-validation/jquery": "3.4.1"
   }
 }

version.py

@@ -26,4 +26,4 @@ LATEST_RELEASE_ANNOUNCEMENT = "https://blog.zulip.org/2019/03/01/zulip-2-0-relea
 #   historical commits sharing the same major version, in which case a
 #   minor version bump suffices.
 
-PROVISION_VERSION = '65.0'
+PROVISION_VERSION = '65.1'