Update geokit requirement from ~> 1.9.0 to >= 1.9, < 1.14

Updates the requirements on [geokit](https://github.com/geokit/geokit) to permit the latest version.
- [Release notes](https://github.com/geokit/geokit/releases)
- [Changelog](https://github.com/geokit/geokit/blob/master/CHANGELOG.md)
- [Commits](https://github.com/geokit/geokit/commits/v1.13.1)

Signed-off-by: dependabot[bot] <support@dependabot.com>

calagator.gemspec

@@ -29,7 +29,7 @@ Gem::Specification.new do |s|
   s.add_dependency "bluecloth", "~> 2.2"
   s.add_dependency "font-awesome-rails", "~> 4.3"
   s.add_dependency "formtastic", "~> 3.1"
-  s.add_dependency "geokit", "~> 1.9.0"
+  s.add_dependency "geokit", ">= 1.9", "< 1.14"
   s.add_dependency "htmlentities", "~> 4.3"
   s.add_dependency "jquery-rails"
   s.add_dependency "jquery-ui-rails", "~> 5.0"