Migrate to GitHub actions, remove old rubies/paperclips

.github/workflows/test.yml

@@ -0,0 +1,19 @@
+name: Tests
+on: [push, pull_request]
+jobs:
+  rspec:
+    strategy:
+      fail-fast: false
+      matrix:
+        gemfile: [gemfiles/Gemfile.paperclip-6.0.x, Gemfile]
+        ruby: [2.6, 2.7]
+    runs-on: ubuntu-latest
+    env: # $BUNDLE_GEMFILE must be set at the job level, so it is set for all steps
+      BUNDLE_GEMFILE: ${{ github.workspace }}/${{ matrix.gemfile }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+      - run: bundle exec rake

README.md

@@ -1,6 +1,6 @@
 # paperclip-tus
 
-[![Build Status](https://travis-ci.org/deees/paperclip-tus.svg?branch=master)](https://travis-ci.org/deees/paperclip-tus)
+[![Build Status](https://github.com/deees/paperclip-tus/actions/workflows/test.yml/badge.svg)](https://github.com/deees/paperclip-tus/actions/workflows/test.yml)
 
 paperclip-tus is paperclip io adapter for [tus-ruby-server](https://github.com/janko-m/tus-ruby-server).
 

paperclip-tus.gemspec

@@ -26,6 +26,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'rubocop'
 
-  spec.add_runtime_dependency 'paperclip', '>= 4.3'
+  spec.add_runtime_dependency 'paperclip', '>= 6.0'
   spec.add_runtime_dependency 'tus-server', '~> 0.10'
 end