update bundler dep

Author: Jef Spaleta

.travis.yml

@@ -5,7 +5,6 @@ cache:
 - bundler
 before_install:
   - sudo iptables -L DOCKER || ( echo "DOCKER iptables chain missing" ; sudo iptables -N DOCKER )
-  - gem install bundler -v 1.17.3
 install:
 - bundle install
 rvm:

CHANGELOG.md

@@ -4,6 +4,9 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 This CHANGELOG follows the format listed [here](https://github.com/sensu-plugins/community/blob/master/HOW_WE_CHANGELOG.md).
 
 ## [Unreleased]
+### Changes
+- Updated development dependency to bundler ~> 2.1
+- Updated runtime dependency to 'pg' '1.2.1' from 1.1   
 
 
 ## [3.0.0] - 2019-11-20

sensu-plugins-postgres.gemspec

@@ -39,7 +39,7 @@ Gem::Specification.new do |s| # rubocop:disable Metrics/BlockLength
   s.add_runtime_dependency 'dentaku',      '2.0.4'
   s.add_runtime_dependency 'pg',           '1.2.1'
 
-  s.add_development_dependency 'bundler',                   '~> 1.7'
+  s.add_development_dependency 'bundler',                   '~> 2.1'
   s.add_development_dependency 'codeclimate-test-reporter', '~> 1.0'
   s.add_development_dependency 'github-markup',             '~> 3.0'
   s.add_development_dependency 'kitchen-docker',            '~> 2.6'