Upgrade to jQuery 3.5.1

Latest version of jquery-rails gem includes latest jQuery 3 version with
all security patches. See [1].

[1] https://github.com/rails/jquery-rails/blob/v4.4.0/CHANGELOG.md#440

Gemfile

@@ -29,7 +29,7 @@ gem "groupdate", "~> 5.1.0"
 gem "initialjs-rails", "~> 0.2.0.9"
 gem "invisible_captcha", "~> 0.10.0"
 gem "jquery-fileupload-rails"
-gem "jquery-rails", "~> 4.3.3"
+gem "jquery-rails", "~> 4.4.0"
 gem "jquery-ui-rails", "~> 6.0.1"
 gem "kaminari", "~> 1.2.1"
 gem "newrelic_rpm", "~> 4.1.0.333"

Gemfile.lock

@@ -292,7 +292,7 @@ GEM
       actionpack (>= 3.1)
       railties (>= 3.1)
       sassc
-    jquery-rails (4.3.3)
+    jquery-rails (4.4.0)
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
@@ -665,7 +665,7 @@ DEPENDENCIES
   initialjs-rails (~> 0.2.0.9)
   invisible_captcha (~> 0.10.0)
   jquery-fileupload-rails
-  jquery-rails (~> 4.3.3)
+  jquery-rails (~> 4.4.0)
   jquery-ui-rails (~> 6.0.1)
   kaminari (~> 1.2.1)
   knapsack_pro (~> 1.15.0)

app/assets/javascripts/application.js

@@ -10,7 +10,7 @@
 // Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
 // about supported directives.
 //
-//= require jquery
+//= require jquery3
 //= require jquery_ujs
 //= require jquery-ui/widgets/datepicker
 //= require jquery-ui/i18n/datepicker-ar